12. Product Specifications
12-1. List of product specifications
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12
12.
Product Specifications
12-1. List of product specifications
Model
NP-1000
Gas to be
detected
CH4, and C3H8, i-C4H10, H2, He and Ar as optional specification
Detection
principle
Thermal conductivity
Measurement
range
0-100 vol%
Alarm type
Gas Alarm:
Fault
alarm:
ON/OFF setting available (default: OFF), arbitrary alarm setpoint
setting available, non-latching (auto-reset)
Flow rate low, poor sensor connection, battery voltage low, circuit
abnormality, and calibration range abnormality
Alarm operation
Gas Alarm:
Fault
alarm:
Continuous buzzer sound, blinking of red lamp and gas concentration
display (with alarm set to ON)
Intermittent buzzer sound, blinking of red lamp, fault detail display
Accuracy of the
reading
±5 vol% (under the same conditions)
Response time
90% response: Within 30 seconds
Detection
method
Pump suction type with a flow rate of 0.3 L/min or more (pump L mode)
Display
LCD seven-segment numeric display, bar meter display (50 divisions) and status
information display
Seven-segment digital display: 0 - 100 vol%
Digital bar meter display: Auto range switching
L range: 0 - 10.0 vol%
H range: 0 - 100 vol%
Power supply
AA alkaline battery x 4*
Continuous
operating time
About 30 hours (new batteries, without alarms or lighting, at 25ºC )
Operating
environment
Operating temperature range: -20 - +50ºC
Operating humidity range: 95%RH or less (non-condensing)
Storage temperature range: -25 - +60ºC
Storage humidity range: 95%RH or less (non-condensing)
External
dimensions
External dimensions: 80 (W) x 124 (H) x 36 (D) mm (projection portions excluded)
Weight
Weight: Approx. 260 g (without batteries)
Drip-proof and
dust-proof
performances
Equivalent to IP-67
Explosion-proof
performance
Intrinsically safe explosion-proof structure
II 1G Ex ia IIC T4 Ga(ATEX) / Ex ia IIC T4 Ga(IECEx) / Ex ia IIC T4(Japan Ex)
Functions
LCD backlight, data logger, log data display, peak display,
