RKI Instruments GD-K71D - Manual (Page 43)

PT2E-1052
42
11―1. Specifications
Model : GD-K71D
Transmission method : Electric current transmission method, 3-wire(or 4-wire),
4∼20mADC
Gas concentration signal : 4∼20mA(Linear upto 22mA)
Initial clear signal
: 2.5mA
Maintenance signal : 2.5mA
Trouble signal : 0.5mA, non-isolated (max. load : 300Ω at 24VDC)
Applicable sensor : Electrochemical sensor
Detection gas : Toxic gases(Semiconductor processing gases)
Detection range : Depends on detection gas
Gas detection method : Sample drawing method(with low flow alarm detection circuit)
Sample flow rate : 500cc/min
External tubing : φ6-φ4 PTFE tubing (Provided with P.P. coupling)
Gas alarm : 2 levels(Non-lutched mode)
Preset level : 1st ……1/3 of full scale (adjustable)
2nd……2/3 of full scale (adjustable)
Indication : 1st ……Yellow LED lighting
: 2nd……Red LED lighting
Relay output : Dry contact, normally-open for both 1st and 2nd alarm,
rated 0.25A at 125VAC/0.5A at 24VDC(Resistive load).
Alarm delay time : Within 60sec(Time to get an alarm when exposed to gas
concentration of 1.6times alarm level, excluding delay by
external tubing).
Initial clear time : 25 sec. after power ON.
Zero suppression level : 6% of full scale
Self-diagnostic function
Contents : Low flow, system error, sensor disconnection, abnormal
zero correction.
Trouble indication : Flashing of POWER light, message of content.
Relay output : Dry contact, normally-open, rated 0.25A at 125VAC/0.5A at
24VDC(Resistive load).
Display function
Gas concentration : 4 digit LED(7 segment)
Status
: LED light
①Power/trouble indication: PW/TR(continuous/flashing)
・Normal……Green/continuous
・Trouble……Green/flashing
②Gas alarm 1st: ALM1 light on (Orange)
2nd: ALM2 light on (Red)
Normal……Light off
Alarm ……Orange, Red light on
③Maintenance: SKIP light flashing
④Function interruption : SKIP light on
・OFF during measurement, ON at SKIP.
1１ LIST OF PRODUCT SPECIFICATIONS