Detcon TP-624C - Manual (Page 6)

3.3 S PECIFICATIONS
Method of Detection
Solid state metal oxide diffusion/adsorption
Electrical Classification
CSA-NRTL approved Class I; Groups B, C, D; Div. 1.
Response Time
T50 < 45 seconds, T80 < 90 seconds
Clearing Time
T80 < 90 seconds
Repeatability
± 5% FS
Range
0-20 ppm, 0-50 ppm, or 0-100 ppm
Operating Temperature
-40° to +175° F
Accuracy
± 5% FS
Sensor Warranty
10 year conditional
Power Consumption
Normal operation = 83 mA (<2 watt); Full alarm = 118 mA (<3 watts)
Output
3 relays (alarm 1, alarm 2, and fault) contact rated 5 amps @ 125 VAC, 5 amps @ 30 VDC;
Linear 4-20 mA DC
RS-485 Modbus™
Input Voltage
22-28 VDC
3.4 O
PERATING
S
OFTWARE
Operating software is menu listed with operator interface via the two magnetic program switches located under the
face plate. The two switches are referred to as “PGM 1” and “PGM 2”. The menu list consists of 3 items which
include sub-menus as indicated below. (Note: see the last page of this manual for a complete software f low chart.)
01. Normal Operation
a) Current Status
02. Calibration Mode
a) Span
03. Program Menu
a) View Program Status
b) Set Alarm 1 Level
c) Set Alarm 2 Level
d) Set Calibration Level
e) Set Heater Level
f) Set Range
g) Linearize Sensor
3.4.1 Normal Operation
In normal operation, the display ref lects the current status of the sensor and gas concentration and appears as:
“0 PPM H2S” . The mA current output corresponds to the monitoring level and range of 0-100 ppm = 4-20 mA.
Detcon Model TP-624C Hydrogen Sulfide Sensor PG.6