H² Detector
User Manual
Page 9
2013 © Peak Scientific – Rev 4 – 03/09/1
Technical Specification
Environment
Minimum operating ambient temperature
0°C (40°F)
Maximum operating ambient temperature
40°C (104°F)
Maximum relative humidity
90% Non-Condensing
Minimum storage temperature*
0
o
C (40
o
F)
Maximum storage temperature*
40
o
C (104
o
F)
*NOTE – When taken out of storage the Detector should be allowed to acclimatize at
room temperature for a minimum of 3 hours before operation.
Detector Inlets
Mass Flow Rate
500 cc/min(10in/H
2
O max pressure/vacuum)
Transport time
2-30 seconds maximum
Ambient Point
In line air filter required (supplied)
Default Configuration
Current source with:
1.0mA Fault
2.0mA Inhibit
3.0mA Maintenance Fault
4.0 to 20.0mA Gas Reading (normal operation)
21mA Over range
Toxic Gas
Flammable Gas
Oxygen
Full Scale(FS)
Typically 4 x Threshold Limit
Value (TLV)
100% Lower
Explosive Limit
(LEL)
25% Volume
(v/v)
Lowest Alarm Level (LAL)
Typically ½ TLV
10% LEL
5% v/v
Lower Detectable Level
(LDL)
Typically 0.4 TLV
9% LEL
0% v/v
The LDL is the minimum level that is reliably distinguishable from zero.
Alarm 1 (Relay 1)
½ TLV
10% LEL
23.5% v/v (rising)
Normally de-energized, energizes on alarm. Contact Normally Open (NO),
Closes on alarm.
Alarm 2 (Relay 2)
TLV
20% LEL
19.5% v/v (Falling)
Normally De-energized, de-energizes on alarm. Contact Normally Open
(NO), closes on alarm.
Fault (Relay 3)
Normally energized, de-energizes on fault. Contact normally open (NO).
Instrument Fault only.
Latching
Latching Alarm and fault relay DO NOT automatically reset when reading
falls below alarm thresholds. Relays MUST be manually reset.
Pass Code
No pass code set.
Electrical Requirements
The Detector has its power supplied by the Precision 500 generator
General
Detector dimensions in cm W x D x H
6.3 x 16.2 x 20 (2.5” x 6.4” x 7.9”)
Detector weight
1.8 kg (3.9 lb.)
Shipping crate dimensions in cm W x D x H
40 x 40 x 15 (15.7” x 15.7” x 5.9”)
Shipping weight
3 kg (6.6 lb.)
