HN-EK SERIESWALL MOUNTING TYPE TEMPERATURE /HUMIDITY METER“Proper Measurement” for air condition management
HN-EK series is thin designed wallmounting type to eliminate the exterior
disturbance to the utmost.
Recommended for pharmaceutical storage /warehouse, incubation room, etc., which
requires high accuracy temperature andhumidity measurement.
■ FEATURES●Regress the heat conduction effect from theinstallment surface and realize highaccuracy measurement.
●Easy maintenance by exchanging sensorunit.
●Thin design, installable to anyplace.

■ MODELSHN-EK□1NOutput signal
A : Temperature : 4 to 20mADC (2-wire transmission)
Humidity : 4 to 20mADC (2-wire transmission)
B : Temperature: Pt100, 3-wire
Humidity : 4 to 20mADC (2-wire transmission)■ CONFIGURATION
Receiving instrument(Temp.)HN-EKPower supply(12 to 24 VDC)

*1
Receiving instrument(Hum.)
4 to 20mADC
2-wire transmission

4 to 20mADC (2-wire transmission)*1 HN-EKA1N:
HN-EKB1N: Pt100, 3-wire

1PSE-713A
PSE-713

High accuracy sensor equippedSpecifications

Realize ±2%RH measurement at vast rangeºCAdopt platinum resistance thermometer (accuracy: ±3%RH)(Select output from either 4 to 20mADC 2-wire transmission
or Pt100Ω 3-wire)

Model
Humidity sensor
Measuring range
Accuracy rating
Response timeSensor unit exchangeable

Output signal

Traceability certificate
issuable just for theexchanging sensor unit.
Model name: HN-ESKA9N
for HN-EKA1N,HN-ESK9BN
for HN-EKB1N.
Annual exchanging isrecommended.

Resistance load
Temperature sensor
Measuring range
Accuracy rating
Response time
Output signal
Resistance load

Easy installment

Sensor compatibility
Power supply
Connection
Installation
Working temp./
hum. range

Installable to general purpose embedded box.
(Installation pitch 83.5mm (JIS C8435))

Regress the heat conduction effect fromthe installment surface
Thermo-plate to cut the heat from large heat capacity wall orpillar is standard attached.

CE Marking

HN-EKA1N
HN-EKB1N
High-polymer capacitance type
0 to 95%RH±2%RH (at 5 to 90%RH, 25ºC)
Within 15 seconds *1
4 to 20mADC 2-wire transmission(for 0 to 100%RH)
500Ω or less(at 24VDC power supply)
Platinum resistance thermometer,
Pt100 equivalent-10 to 55ºC
±0.3ºC
Within 10 minutes (at 0.15m/s ventilation)
4 to 20mADC
Pt100 (100Ω2-wire transmission
at 0ºC) 3-wire(for -10 to 55ºC)
500Ω or less(at 24VDC power supply)Compatible by sensor unit
12 to 24VDC
Spring type terminal board (AWG 14 to 28)
Screw terminal (M4 screw x 2 each)-15 to 60ºC, 0 to 95%RH(no dew condensation)
EMC: F2014/30/EU
EN61326-1: F2013 Class A
Stability/ Hum. ±3%RH, (Temp. ±1.5ºC
only for HN-EKA)*Under the test environment by EMC directives.
RoHS: 2011/65/EC, EN50581: 2012

●Before attachment

1 : Response condition: Step response to humidification*●After attachment

Connection
HN-EKA1N
Hum. Temp.

Hum. receiving instrument＋−

DC power supply
12 to 24VDC＋ − G

G ＋ − ＋−＋

Temp. receiving instrument＋

HN-EKB1N
Embedded box

Thermoplate

Hum. Temp.
G U＋U− A B B−

Hum. receiving instrument＋−

DC power supply
12 to 24VDC＋ − G

External dimensions●FrontA●SideBB

Temp. receiving instrument

145

Whenthermoplateattached●Humidity converter HN-GV *2Converts and output to absolute humidity,
relative humidity, mixing ratio, vapor
pressure and dew point.
HN-EKA1N
HN-GV
Hum. Temp.
G ＋ − ＋−＋①＋ Hum.
⑬＋ Temp.
③− Hum.
⑤−⑭− Temp.

85

32

DC power supply
24VDC
＋ − G

40
Unit: mm

*2 : Corresponds to HN-EKA1N only

Specifications subject to change without notice. Printed in Japan (I) 2017. 611

32-8 KUMANO-CHO,ITABASHI-KU,TOKYO 173-8632
Telephone : +81-3-3956-2171
Facsimile : +81-3-3956-0915
E-mail : inter@chino.co.jp
Website : www.chino.co.jp/