GMW80 series specifications - GMW83 - GMW83A - GMW83D - GMW83DRP - GMW83DRPC - GMW83RPC - GMW84 - GMW84S - GMW86P - GMW87M

GMW80 Series User Guide

Document code
M211748EN
Revision
H
Language
English
Product
GMW83
GMW83A
GMW83D
GMW83DRP
GMW83DRPC
GMW83RPC
GMW84
GMW84S
GMW86P
GMW87M
Document type
User guide
Table 1. GMW80 models
Model Meas. parameters Output CO2 range (ppm)
GMW86P CO2+T Current and voltage output, Pt1000 0 … 2000
GMW83RP 1 CO2+RH+T Voltage outputs, Pt1000 0 … 2000
GMW83DRP 1 CO2+RH+T Voltage outputs, Pt1000, display with metric scale output 0 … 2000
GMW83 CO2+T Voltage outputs 0 … 2000
GMW83A CO2+T Voltage outputs, CO2 indicator LEDs 0 … 2000
GMW83D CO2+T Voltage outputs, display with metric scale output 0 … 2000
GMW84 CO2+T Current output 0 … 2000
GMW84S CO2+T Current output, relay 0 … 2000
GMW87 CO2 RS-485 Modbus RTU output 0 … 5000
GMW88 CO2 Current and voltage output 0 … 2000 / 0 … 5000 2
Table 2. GMW80 measurement performance
Property Value/Description
Carbon dioxide
Measurement range

0 … 2000/5000 ppm (see table GMW80 models)

Accuracy 3:
at +20 … +30 °C (+68 ... +86 °F) ±(30 ppm +3 % of reading)
at +10 … +20 °C (+50 ... +68 °F) and +30 … +40 °C (+86 ... +104 °F) ±(35 ppm +3.7 % of reading)
at +0 … +10 °C (+32 ... +50 °F) and +40 … +50 °C (+104 ... +122 °F) ±(40 ppm +4.8 % of reading)
Stability in typical HVAC applications ±(15 ppm + 2 % of reading) over 5 years
Warm-up time

1 min

10 min for full specification

Response time (63 %)

60 s

7 min (GMW87 and GMW88)

Carbon dioxide sensor CARBOCAP® GM10
Temperature
Measurement range 0 … +50 °C (+32 ... +122 °F)
Temperature sensor

On P models: Pt1000 RTD Class F0.15 IEC 60751

For analog outputs: Digital temperature sensor

Accuracy (GMW83 and GMW84):
at +10 … +30 °C (+50 ... +86 °F) ±0.5 °C (0.9 °F)
at +0 … +10 °C (+32 ... +50 °F) and +30 … 50 °C (+86 ... +122 °F) ±1 °C (1.8 °F)
Humidity
Measurement range 0 … 95 %RH
Accuracy at temperature range +10 … +30 °C (+50 ... +86 °F):
0 … 80 %RH ±3 %RH
80 … 95 %RH ±5 %RH
Accuracy at temperature ranges 0 … +10 °C (+32 ... +50 °F) and +30 … +50 °C (+86 ... +122 °F):
0 … 95 %RH ±7 %RH
Stability in typical HVAC applications ±2 %RH over 2 years
Product lifetime > 15 years
Table 3. GMW80 operating environment
Property Value/Description
Operating temperature 0 … +50 °C (+32 … +122 °F)
Operating humidity

0 … 95 %RH

Dew point < 30 °C (+86 °F)

Storage temperature

Models without display: –40 … +70 °C (−40 … +158 °F)

Models with display: −30 … +70 °C (−22 … +158 °F)

Table 4. GMW80 inputs and outputs
Property Value/Description
Supply voltage

18 … 35 V DC

24 V AC ±20 % 50/60 Hz

Max. current consumption at 18 V DC

45 mA

70 mA (GMW84 models)

Max. power consumption at 30 V AC

0.7 W (GMW83 models)

1 W (GMW86 models, GMW87, and GMW88)

1.2 W (GMW84 models)

RS-485 interface

(in GMW87 only)

Isolated, supports Modbus RTU protocol

  • Modbus RTU address range:
    • 1 … 247 (up to 255 possible, non-standard)
  • Bit rates:
    • 4800, 9600, 19200, 38400, 57600, 76800, 115200
  • Parity:
    • None or Even
  • Supports automatically both 1 and 2 stop bits
Outputs

4 … 20 mA and/or 0 … 10 V 4

Current loop resistance (4 … 20 mA) 0 … 600 Ω
Voltage output load resistance Min. 10 kΩ
CO2 output scale 0 … 2000/5000 ppm
Temperature output scale 0 … +50 °C (+32 ... +122 °F)
Humidity output scale 0 … 100 %RH
Passive temperature sensor (P models) Pt1000 RTD
Temperature setpoint (T models) 10 kΩ potentiometer
Relay (S models)

1 pc, SPST-NO

Max. 50 V DC / 50 V AC, 500 mA

CO2 indicator LED levels (A model)

Flashing red: > 2000 ppm

Red: 1200 … 2000 ppm

Yellow: 800 … 1200 ppm

Green: < 800 ppm

Table 5. GMW80 mechanical specifications
Property Value/Description
IP rating

IP30

IP64 (GMW87 and GMW88)

Housing material

ABS/PC UL-V0 approved

PC (GMW87 and GMW88)

Housing color White (RAL9003)
Output connector Screw terminal
Max. wire size 2 mm2 (AWG14)
Weight

Plain and LED version: 114 g (4.02 oz)

Display version: 124 g (4.37 oz)

GMW87 and GMW88: 160 g (5.64 oz)

Table 6. GMW80 compliance
Property Value/Description

EU directives

EMC Directive (2014/30/EU)

RoHS Directive (2011/65/EU) amended by 2015/863

EMC compatibility

EN 61326‑1, industrial environment

Compliance marks

CE, RCM
1 Models with calibration certificate available (GMW83RPC/GMW83DRPC).
2 Range user-selectable with dip switch. Default range 0 … 5000 ppm.
3 Accuracy applicable to 2000 ppm measurements at 1013 hPa pressure. Pressure or temperature dependencies not included in the values.
4 Analog outputs are not available in model GMW87.