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© Setra Systems, Inc. All Rights Reserved. The Setra Systems name and logo are registered trademarks of Setra Systems, Inc.

6.0 Electrical connections

see figure Fig. 5 Voltage output and Fig. 6 Current ouput

EMC recommendations for wiring

The requirements of EMC standards as specified in the technical data are only fulfilled with the  probes connected 

either directly or with Setra original extension cables to SRH400.

•  SRH400 with metal enclosure must be grounded either at the designated points on the inside, or outside at the 

mounting plate. The probe must not be grounded; it must be electrically isolated from the GND.

•  Locate the SRH400, the probe cable and the output cables as far as possible from sources of electromagnetic 

disturbances.

•  For the analogue outputs use either shielded or twisted cable pairs. The shield shall be grounded at one end 

only, preferably at the controller side. 

•  Cable loops may impact on the EMC behavior of SRH400. Keep all cables as short as possible. Unused wires 

shall be grounded at both ends. Run all cables as close as possible to the ground potential, for instance close to 

the walls or steel structure elements.

power supply

for 0 - 1 V:  10 - 35 V DC

  

9 - 29 V AC

for 0 - 10 V:   15 - 35 V DC

  

15 - 29 V AC

power supply

20...35 V DC;  R

L

 <500 Ω

11...35 V DC;   R

L

 <  50 Ω

3

4

1

2

5

SRH400 - Analog volts

SRH400 - Analog millamps

6.1 Connection diagram

Figure 5.

Figure 6.

Содержание SRH400

Страница 1: ...Setra Systems Inc 159 Swanson Road Boxborough MA 01719 800 257 3872 www setra com Operating Instructions Model SRH400...

Страница 2: ...t is for information purposes only and is subject to change without notice Setra Systems assumes no responsibility for any errors or for consequential damages that may result from the use or misrepres...

Страница 3: ...8 0 RH and T adjustment of probes 8 1 Definitions 8 2 S07 adjustment with SRH400 basic device 8 3 1 point RH and T adjustment 8 4 Return to factory calibration 8 5 Loop adjustment and calibration in...

Страница 4: ...led in a manner that does not have a negative effect on its safe use The user is responsible for observing all applicable safety guidelines local and international with respect to safe installation an...

Страница 5: ...as on the optional display One or two point adjustment for RH and T of the transmitter canbeeasilyperformedwithpushbuttonsontheelectronics boardoftheSRH400basicunit Alternatively theprobescanbe adjus...

Страница 6: ...H400 version with remote probe please see below 4 4 probes connected to SRH400 with extension cables SRH400 with remote sensing probe The probes can be also connected to the SRH400 housing with extens...

Страница 7: ...e electrically isolated from the GND Locate the SRH400 the probe cable and the output cables as far as possible from sources of electromagnetic disturbances For the analogue outputs use either shielde...

Страница 8: ...on indicates adjustment mode 1 flash confirms reset to factory calibration 4 S1 Functions 1 point RH or T adjustment RH 50 RH T within the upper half of the T scale 2 point RH or T adjustment high ca...

Страница 9: ...hall remain constant Allow min 30 min stabilization time for RH calibration or adjustment If needed clean the sensors and replace the filter cap by a new one 8 2 1 2 point RH and T adjustment 1 Set th...

Страница 10: ...S2 for 5 seconds The return to factory calibration is indicated by one flash of the LED Calib 8 5 Loop adjustment and calibration in the field Loop calibration or adjustment in the field as required b...

Страница 11: ...15 35 V DC 15 29 V AC power supply 20 35 V DC RL 500 11 35 V DC RL 50 SRH400 Analog volts For the SRH400 with current output an ammeter shall be connected as in Fig 6 power supply for 0 1 V 10 35 V D...

Страница 12: ...tput Iout mA 16 Ref Tmax 4 mA For voltage output Uout V Abb Ref Tmax Where Abb voltage scaling 1 V 5 V 10 V Ref reference value of temperature 45 C 113 F resp 5 C 41 F Tmax max temperature scaling e g...

Страница 13: ...ers HA010103 SRHSS Stainless steel sintered filter Filters HA010104 SRHPG Plastic grid filter Filters HA010105 SRHPF PTFE filter 12mm Filters HA010106 SRHMG Metal grid filter Filters HA010115 SRHHP H2...

Страница 14: ...To assure prompt handling please make sure the RMA number is on the outside of the box and a copy of the service request from is included in the shipment If applicable include a copy of the PO for re...

Страница 15: ...s notified in advance of and the product is returned to SETRA transportation prepaid Unless otherwise specified in a manual or warranty card or agreed to in writing and signed by a SETRA officer SETRA...

Страница 16: ...Setra Systems Inc 159 Swanson Road Boxborough MA 01719 800 257 3872 www setra com SS SRH400 Rev B 09 2018...

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