2.0 SPECIFICATION
2.1 Enclosure - NA
2.2 Dimensions
Electronics unit: H. 180mm W.85mm D.60mm See figure 1.
2.3 Ambient Temperature
Sensor unit: -10…50°C Max
2.4 Display - NA
2.5 Analog outputs – isolated (Optional)
4…20mAV proportional to 0..100% Hydrogen (minimum load 500 ohm.) Optional
2.6 Alarm indicators (Optional)
Voltage free contacts SPDT Relay 1A /120Vac or 2A /240Vac
-
High alarm 1 relay (Set to 0.6% Hydrogen)
-
High alarm 2 relay (Set to 1.0% Hydrogen)
Set up: 9600 Baud, 1 start bit, 8 data bits, 1 stop bit, no parity, hardware (CTS/RTS) handshaking.
See Appendix 1 for proposed communication protocol.
|
DTE male 9w |
|
|
PIN |
NAME |
|
3 |
TX(out) |
|
2 |
RX (in) |
|
7 |
RTS (out) |
|
8 |
CTS (in) |
|
5 |
GND |
RS485
Optional
Typical T90 for combustion gas application is 30 seconds.
2.9 Power Requirements
Voltage: 24Vdc +/- 5%
Power: 10W
The standard connections are captive seal compression fittings suitable
for 0.25" (or 6mm) diameter tube on the sample inlet and sample outlet. The tubing must be sturdy enough to withstand the slight compression applied by the tightened coupling. Metal, nylon or other rigid plastics are suitable. Rubber, PVC etc. are only suitable if a supporting insert is used.
See figure 1 for inlet / outlet
