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RAEGuard 2 PID is a flameproof stainless-steel host with an intrinsically safe DigiPID for fixed VOC monitoring. The digital platform supports off-line sensor calibration and custom ranges. Graphic display, local alarm LEDs and a three-key magnetic wand so the Ex d lid stays closed on site.
The Chinese manual adds 10–28 VDC, 3-wire 4–20 mA, alarm contacts and RS-485 Modbus, in Diffusion or Flow Through versions. The brochure calls it a fixed TVOC detector with third-generation IS PID, self-cleaning and an internal circulating pump path.




From the Chinese specification order table. Ranges can be customised. Open a P/N for the SKU page.
| Model | Sampling | Range | Resolution | P/N |
|---|---|---|---|---|
| FGM-2001 | Diffusion | 0–100 ppm | 0.01 ppm | D03-0001-C00 |
| FGM-2002 | Diffusion | 0–1000 ppm | 0.1 ppm | D03-0002-C00 |
| FGM-2001 | Flow Through | 0–100 ppm | 0.01 ppm | D03-0004-C00 |
| FGM-2002 | Flow Through | 0–1000 ppm | 0.1 ppm | D03-0005-C00 |
| Item | Value |
|---|---|
| Principle | Photoionization PID (not infrared) |
| Sensor | 3rd-gen intrinsically safe DigiPID, 10.6 eV UV lamp |
| Sampling | Diffusion or Flow Through (internal pump ~500 cc/min) |
| Range | 0–100 ppm (FGM-2001) or 0–1000 ppm (FGM-2002); custom on request |
| Resolution | 0.01 ppm (100 ppm) / 0.1 ppm (1000 ppm); DigiPID also 10 ppb / 100 ppb / 1 ppm |
| Accuracy | ±3% F.S. transmitter (Chinese spec); DigiPID ±2% at cal point |
| T90 | Transmitter < 15 s (spec); DigiPID ~30 s diffusion / ~5 s pumped (manual) |
| Calibration | Two-point (zero then span). Factory-calibrated; run 24 h after install, then calibrate |
| Item | Value |
|---|---|
| Power | 10–28 VDC; ~210 mA at 24 V; < 5 W; Um 28 VDC |
| Analog | 3-wire 4–20 mA, adjustable; 600 Ω load |
| Digital | RS-485 Modbus; 4800 / 9600 / 19200 baud |
| Relays | High / low / fault dry contacts, 30 VDC 2 A, NO or NC |
| Entry | 3/4″ NPT M; terminals 12–24 AWG (0.2–4.0 mm²) |
| UI | 128×64 graphic LCD; three-key magnetic wand |
| Item | Value |
|---|---|
| Ingress | IP65 |
| Mounting | 2″ pipe or wall; 133 mm hole pitch; sensor must hang vertical |
| Size / weight | 257 × 201 × 107 mm (HWD), stainless steel, 3.5 kg |
| Temperature | Manual: transmitter −20 to +55 °C, sensor −40 to +55 °C |
| Humidity | 0–95 %RH non-condensing |
| Pressure | 86–106 kPa |
| Approvals | Host Ex d [ia Ga] IIC T4 Gb; sensor Ex ia IIC T4; UL/CSA Class I Div. 1 ABCD T4; IECEx; China Ex d ia IIC T4 |
Manual kit: cal adapter, magnetic wand, user manual. Outdoor Flow Through sites should add the weather enclosure, pretreatment or dryer. Those kits do not include the detector.
Mount on a 2″ pipe or a wall (133 mm hole pitch). Keep the sensor vertical. On Flow Through units connect the water-trap filter to the longer inlet.
Ex d rules: isolate power before opening in a hazardous area; earth the housing (≥4 mm², <4 Ω); use an Ex d IIC gland; field cable rated ≥80 °C.
| Group | Pin | Mark | Function |
|---|---|---|---|
| 1 Relays | 1 | ERR | Fault |
| 1 Relays | 2 | LOW | Low alarm |
| 1 Relays | 3 | HIGH | High alarm |
| 1 Relays | 4 | COM | Relay common |
| 2 Power / analog | 5 | OUT | 4–20 mA |
| 2 Power / analog | 6 | GND | 0 V |
| 2 Power / analog | 7 | +V | 10–28 VDC |
| 3 RS-485 | 8 | 485A | RS-485 A |
| 3 RS-485 | 9 | 485B | RS-485 B |
The wand maps to [+], [−] and [MODE]. Two-point calibration: zero gas then a known span (isobutylene recommended). The unit ships calibrated; after install run 24 hours, then calibrate. The manual suggests at least every 6 months, plus local regulations.
DigiPID can be hot-swapped in the hazardous area. Removed for more than 60 s it reports sensor fail; refit, hold [+] ~3 s for “replace sensor”, then [−] to reboot. Use only OEM lamps and sensors. Clean the inlet filter regularly or response slows.
Manual part 2: DigiPID is a VOC module with UV-lamp drive and analog/digital I/O for Zone 0/1/2, IIA–IIC T4, −40 to +55 °C. Hot-swappable. T90 ~30 s diffusion / ~5 s pumped; ±2% at the cal point; typical life 2 years. Together with the host it is an Ex d + IS fixed system.
19 questions: selection/wiring (ranges, terminals, earthing, controller/PLC, wand calibration) and field service (slot fault, over-range, pump/lamp, DigiPID cap cleaning). Moved off the product page to keep it shorter.
Diffusion (D03-0001-C00 / D03-0002-C00): rain cover C01-3010-000, optional heavy cover D03-0304-000.
Flow Through (D03-0004-C00 / D03-0005-C00): add weather kit D03-0305-000, pretreatment D03-0014-C00 or dryer 081-0018-C00. Dryer path is for benzene / toluene / xylene.
Combined from the specification and the operator manual:
Low-resolution, softened first-page previews only — enough to recognise the scheme and number. Official clear PDFs are supplied after purchase. No certificate downloads on this page.








Pick family first: TVOC instrument, weather enclosure, pretreatment or dryer. Weather / pretreatment / dryer kits are Flow Through only and do not include the detector.
| P/N | Family | Type | Range | Description |
|---|---|---|---|---|
| D03-0001-C00 | TVOC Gas Detector | Instrument | FGM-2001 / Diffusion / 0.01–100 ppm | FGM-2001 RAEGuard 2 PID (Diffusion) 0.01–100 ppm VOC with smart digital PID sensor |
| D03-0002-C00 | TVOC Gas Detector | Instrument | FGM-2002 / Diffusion / 0.1–1000 ppm | FGM-2002 RAEGuard 2 PID (Diffusion) 0.1–1000 ppm VOC with smart digital PID sensor |
| D03-0004-C00 | TVOC Gas Detector | Instrument | FGM-2001 / Flow Through / 0.01–100 ppm | FGM-2001 RAEGuard 2 PID (Flow Through) 0.01–100 ppm VOC with smart digital PID sensor |
| D03-0005-C00 | TVOC Gas Detector | Instrument | FGM-2002 / Flow Through / 0.1–1000 ppm | FGM-2002 RAEGuard 2 PID (Flow Through) 0.1–1000 ppm VOC with smart digital PID sensor |
| D03-3015-000 | TVOC Gas Detector | Accessory | — | Calibration cap |
| C01-3010-000 | TVOC Gas Detector | Accessory | — | Rain cover, Diffusion |
| 033-3032-000 | TVOC Gas Detector | Accessory | — | Magnetic wand |
| D03-2031-001 | TVOC Gas Detector | Accessory | — | Mounting plate, stainless steel |
| 2013-2031-001 | TVOC Gas Detector | Accessory | — | U-bolt clamp |
| 2036-3001-000 | TVOC Gas Detector | Accessory | — | RAEGuard explosion-proof cable gland kit |
| 033-2061-000 | TVOC Gas Detector | Accessory | — | Stopping plug 3/4" NPT M |
| 490-0804-000 | TVOC Gas Detector | Accessory | — | Rain-cover hose clamp (black), Flow Through — order with D03-2021-000 |
| D03-2021-000 | TVOC Gas Detector | Accessory | — | Rain cover, Flow Through |
| D03-3018-005 | TVOC Gas Detector | Accessory | — | Water-trap filter assembly / pack of 5, Flow Through |
| 490-0130-000 | TVOC Gas Detector | Accessory | — | Wrench M6 |
| 3006-6713-001 | TVOC Gas Detector | Spare | — | Sounder/beacon 3/4" NPT M, SP-07Plus, red lamp |
| 3006-6715-001 | TVOC Gas Detector | Spare | — | Sounder/beacon 3/4" NPT M, SP-07Plus, blue lamp |
| 3006-6744-001 | TVOC Gas Detector | Spare | — | HART module, UHM-01 |
| C01-0902-011 | TVOC Gas Detector | Spare | — | Smart digital PID sensor module (with lamp), 0–100 ppm, Diffusion |
| C01-0902-012 | TVOC Gas Detector | Spare | — | Smart digital PID sensor module (with lamp), 0–1000 ppm, Diffusion |
| C01-0001-000 | TVOC Gas Detector | Spare | — | Smart digital PID sensor module (with lamp), 0–100 ppm, Flow Through |
| C01-0002-000 | TVOC Gas Detector | Spare | — | Smart digital PID sensor module (with lamp), 0–1000 ppm, Flow Through |
| D03-3002-000 | TVOC Gas Detector | Spare | — | Sample pump assembly |
| D03-3003-000 | TVOC Gas Detector | Spare | — | Safety barrier assembly (mates to DigiPID module) |
| 050-0061-001 | TVOC Gas Detector | Spare | — | MARK2 lamp, 10.6 eV, 1/2" |
| 430-0014-001 | TVOC Gas Detector | Spare | — | PTFE O-ring for lamp |
| C01-3007-200 | TVOC Gas Detector | Spare | — | Sensor detector (includes 3 UV shields) |
| C01-2017-010 | TVOC Gas Detector | Spare | — | UV shield, pack of 10 |
| 411-0018-037 | TVOC Gas Detector | Spare | — | Polyethylene tubing / metre |
| 411-0005-000 | TVOC Gas Detector | Spare | — | PTFE hard tubing / metre |
| 8490-0040-000 | TVOC Gas Detector | Spare | — | Tag plate with chain |
| 8490-0048-000 | TVOC Gas Detector | Spare | — | Compression nut M20×1.5 F |
| D04-2019-000 | TVOC Gas Detector | Spare | — | Compression nut 1/2" NPT F |
| D03-0304-000 | TVOC Gas Detector | Spare | — | Heavy-duty rain cover, Diffusion (optional) |
| D03-3001-001 | TVOC Gas Detector | Service assembly | — | Display board assembly |
| D03-1012-000 | TVOC Gas Detector | Service assembly | — | Main board (instrument SN not programmed) |
| D03-1013-000 | TVOC Gas Detector | Service assembly | — | Interconnect board |
| D03-3005-000 | TVOC Gas Detector | Service assembly | — | THP assembly |
| D03-3008-000 | TVOC Gas Detector | Service assembly | — | 2×13-pin ribbon cable |
| D03-2006-002 | TVOC Gas Detector | Service assembly | — | Flameproof mesh for barrier, pack of 2 |
| 430-B083-0H0 | TVOC Gas Detector | Service assembly | — | O-ring, 8.5×4.5×2 mm |
| C01-2023-010 | TVOC Gas Detector | Service assembly | — | PTFE filter discs / 10, Diffusion — order with C01-2022-000 and C01-2021-000 |
| C01-2022-000 | TVOC Gas Detector | Service assembly | — | Stainless mesh, Diffusion — order with C01-2023-010 and C01-2021-000 |
| C01-2021-000 | TVOC Gas Detector | Service assembly | — | Sensor cap, Diffusion — order with C01-2023-010 and C01-2022-000 |
| C01-3012-000 | TVOC Gas Detector | Service assembly | — | Sensor cap assembly, Flow Through |
| 430-B080-0H0 | TVOC Gas Detector | Service assembly | — | O-ring between lamp housing and cover |
| C01-2034-005 | TVOC Gas Detector | Service assembly | — | Dust cover, Flow Through, pack of 5 |
| D03-0305-000 | Weather Protection Enclosure | Kit | — | Weather Protection Enclosure KIT, RAEGuard 2 PID Flow Through |
| 500-2004-000 | Weather Protection Enclosure | Accessory | — | Air filter |
| D03-2030-000 | Weather Protection Enclosure | Accessory | — | Sealing ring cover |
| 430-B093-070 | Weather Protection Enclosure | Accessory | — | Sealing O-ring |
| 700-2053-000 | Weather Protection Enclosure | Accessory | — | Separator retaining clip |
| 400-0596-000 | Weather Protection Enclosure | Accessory | — | L-type push-in fitting |
| 400-0616-000 | Weather Protection Enclosure | Accessory | — | Quick connector |
| 490-0807-000 | Weather Protection Enclosure | Accessory | — | Cable clip |
| 490-0808-000 | Weather Protection Enclosure | Accessory | — | Sleeve |
| D03-2031-001 | Weather Protection Enclosure | Accessory | — | Mounting plate, stainless steel |
| D03-2029-000 | Weather Protection Enclosure | Spare | — | Sunshade |
| 411-0018-037 | Weather Protection Enclosure | Spare | — | Polyethylene tubing / metre |
| 411-0005-000 | Weather Protection Enclosure | Spare | — | PTFE hard tubing / metre |
| D03-3018-005 | Weather Protection Enclosure | Spare | — | Water-trap filter assembly / pack of 5, Flow Through |
| D03-0014-C00 | Pretreatment Device | Kit | — | KIT, air prefilter with outdoor enclosure, China |
| 600-0310-000 | Pretreatment Device | Accessory | — | Calcium chloride, 30 packs / bag |
| 411-0018-037 | Pretreatment Device | Spare | — | Polyethylene tubing / metre |
| 411-0005-000 | Pretreatment Device | Spare | — | PTFE hard tubing / metre |
| 490-0165-000 | Pretreatment Device | Spare | — | Filter |
| D03-3018-005 | Pretreatment Device | Spare | — | Water-trap filter assembly / pack of 5, Flow Through |
| 081-0018-C00 | Pre-filter Dryer | Kit | — | KIT, air drying pre-filter, China |
| 600-0310-000 | Pre-filter Dryer | Accessory | — | Calcium chloride, 30 packs / bag |
| 411-0018-037 | Pre-filter Dryer | Spare | — | Polyethylene tubing / metre |
| 411-0005-000 | Pre-filter Dryer | Spare | — | PTFE hard tubing / metre |
| D03-3018-005 | Pre-filter Dryer | Spare | — | Water-trap filter assembly / pack of 5, Flow Through |