ENMET CD-1300-ST Series Скачать руководство пользователя страница 7

CD-1300-ST

 

ENMET 

 

Manual Revision Date – June 15, 2017

 

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Manual Part No. – 80003-134 

 

 

4.0 Field Adjustments

 

This section describes the features that can be field configured and the procedures to make these changes. 
 

4.1 Analog Output Range Adjustment 

This section refers to advanced features of the CD-1300-ST Series. 

2000 ppm users need not perform this adjustment. 

The 

CD-1300-ST series

 ships from the factory set for an analog output range of 0 to 2000 ppm.  This range can be changed to any 

sub-range between 0 and 5000 ppm by changing two parameters: 

 
The 

low output threshold 

is the concentration at which the analog output will begin to rise. The factory default low output 

threshold value is 0. 

 

The 

high output threshold 

is the concentration at which the analog output reaches its maximum value.  The factory default high 

output threshold value is 2000. 
 

For example, an application may require the analog output to remain at 0V or 4.0 mA until the gas concentration reaches 500 ppm, 
then reach 10V or 20 mA at a concentration of 1000 ppm. In this example the analog output would scale across this 500 ppm sub-
range so that the analog output would be at half scale (5V or 12 mA) at 750 ppm. 
 
To change the analog output range, use the following procedure: 
 

N

OTE

: whether the shorting block at jumper JP5 is covering both pins or only a single pin, then borrow the shorting block and 

slide it over the two pins of jumper JP4 (see Figure 2 Section 3.3).  The display (if present) will show ‘SEL’. 

 
1.

 

The display (if present) will show ‘SEL’.  Momentarily closing a jumper selects which value to change. If the wrong jumper is 
selected simply open JP4 to restart the unit and begin again. 

2.

 

Select the low output threshold by momentarily closing JP1. 
If the display is present it will show the current low display threshold. If there is no display the value can be displayed using a 
meter connected to the analog output.  In this calibration mode, the analog output is 10,000 ppm at full scale (i.e. 10.0 volts or 
20.0 mA).  If the voltage output is selected, this scaling corresponds to 1 ppm per millivolt or 1000 ppm per volt. 

3.

 

Use the ‘UP’ and ‘DOWN’ buttons to adjust the low output threshold to the desired value. In the example this would be set to 
500. 

4.

 

Remove the shorting block from JP4 to save the value; the unit will reset itself. 

5.

 

Reconnect JP4. The display (if present) will show ‘SEL’. Select the high output threshold by momentarily closing JP2.  If 
present, the display will show the high output threshold.  If there is no display use a voltmeter as described in step 3. 

6.

 

Use the ‘UP’ and ‘DOWN’ buttons to adjust the high output threshold to the desired value. In the example this would be set to 
1000. 

7.

 

Remove the shorting block from JP4 and restore it to its original position at jumper JP5. 

CD-1300-ST series

 will reset and its 

output will now only change when the gas concentration is within the range selected. Below this range the output remains low, 
above this range the output remains high. 

 

Содержание CD-1300-ST Series

Страница 1: ...ENMET 680 Fairfield Court Ann Arbor MI 48108 734 761 1270 Fax 734 761 3220 www enmet com CD 1300 ST Series CO2 Sensor Transmitter Operation and Maintenance Menu ...

Страница 2: ...ent 6 4 2 Altitude Correction 7 4 2 1 Altitude Correction Procedure 7 5 0 CALIBRATION 8 5 1 Verification Procedure 8 5 2 High CO2 Limit 8 5 2 1 Adjusting the High CO2 Limit 8 5 2 2 Optional High Limit Contact 8 5 2 3 Setting High Limit Contact Polarity 9 6 0 DUCT SAMPLING OPTION 10 6 1 Overview 10 6 1 1 Duct Kit Contents 10 6 1 2 Duct Kit Installation 10 7 0 TERMS AND CONDITIONS 11 7 1 Ordering In...

Страница 3: ...ected verified and properly packaged at ENMET and delivered to the carrier in good condition When it was picked up by the carrier at ENMET it legally became your company s property If your shipment arrives damaged o Keep the items packing material and carton As Is Within 5 days of receipt notify the carrier s local office and request immediate inspection of the carton and the contents o After the ...

Страница 4: ...aw Measurement range 0 2000 ppm CO2 Optional 0 5000 ppm Typical drift per year 75 ppm 1200ppm Accuracy 5 of reading or 75 ppm whichever is greater Repeatability 20 ppm Recommended Calibration Interval One Year Response time Less than 1 minute Operating temperature range 0 to 50 C Operating humidity range 0 90 RH non condensing Storage temperature 30 to 60 C Power requirements 20 28 VRMS AC 18 30 V...

Страница 5: ...tion describes the external connections to the CD 1300 ST Series Wiring enters the chassis through the cutout in the center of the unit Figure 2 CD 1300 ST Series Component Location 3 200 2 103 1 600 1 103 0 000 0 000 0 406 2 003 2 753 3 562 5 200 CUSTOMER WIRING NOTE When connecting to ENMET CP 10 CP 60 LC 8 or other 3 wire type controllers 1 Preferred wiring for long runs use 4 wire cable connec...

Страница 6: ...og output selector are connected with the shorting block a current output appears between the two terminals marked ANALOG OUTPUT The output current increases linearly from 4 mA at the low output threshold to 20 mA at the high output threshold The unit is shipped from the factory with the low output threshold at 0 ppm and the high output threshold at 2000 ppm See section 4 1 the Analog Output Range...

Страница 7: ... it over the two pins of jumper JP4 see Figure 2 Section 3 3 The display if present will show SEL 1 The display if present will show SEL Momentarily closing a jumper selects which value to change If the wrong jumper is selected simply open JP4 to restart the unit and begin again 2 Select the low output threshold by momentarily closing JP1 If the display is present it will show the current low disp...

Страница 8: ... concentration and record the reading in ppm 2 Multiply the reading by the scale factor corresponding to the operating altitude in the altitude correction table For instance if the unit is operating at an altitude of 4000 ft the scale factor from the table is 1 14 If the concentration reads 420 ppm multiply 420 times 1 14 giving 478 ppm Adjust the display to read 480 3 Remove the CD 1300 ST Series...

Страница 9: ...table 4 If the reading differs by more than 75 ppm from the known concentration of the calibration gas use the UP and DOWN buttons see Figure 2 Section 3 3 to adjust the reading 5 When the reading agrees with the concentration of the calibration gas remove the shorting block on jumper JP2 and replace in its original position at jumper JP5 6 Turn off the calibration gas flow disconnect the gas tubi...

Страница 10: ...per JP5 as shown in the table below Jumper JP5 Relay Operation OPEN normally closed opens above set point CLOSED factory default normally open closes above set point To open jumper JP5 remove the shorting block from the two pins and replace it so that it engages only a single pin of the jumper The shorting block should not be removed it is required during the calibration procedure ...

Страница 11: ...s θ2 lengths of 1 8 ID tubing 6 1 2 Duct Kit Installation 1 Select a point along the duct where the probe assembly can be installed into unrestricted airflow without interfering with any internal duct components such as dampers radiators etc 2 Mark and drill the four holes for the duct probe as shown in Figure 4 The centerline must be parallel to the air flow through the duct 3 Install the duct pr...

Страница 12: ...ction by the Seller confirms that the product is defective it will be repaired or replaced at no charge within the stated limitations and returned prepaid to any location in the United States The Seller shall not be liable for any loss or damage caused by the improper use or installation of the product The Buyer indemnifies and saves harmless the Seller with respect to any loss or damages that may...

Страница 13: ...ce Request Form assists in the expedient service and return of your unit and failure to provide this information can result in processing delays ENMET charges a one hour minimum billing for all approved repairs with additional time billed to the closest tenth of an hour All instruments sent to ENMET are subject to a minimum evaluation fee even if returned unrepaired Unclaimed instruments that ENME...

Страница 14: ... it Appears on Card RETURN SHIPPING METHOD UPS Ground UPS 3 Day Select UPS Next Day Air UPS ND Air Saver UPS 2 Day Air UPS Account FedEx Ground FedEx Air Express Saver FedEx Air Overnight Std FedEx Air 2 Day FedEx Air Overnight P 1 FedEx Account Insure Shipment Yes No Insurance Amount Product Name or Number Product Serial Number Describe Problem or Needed Service Warranty Claim Yes No CUSTOMER INF...

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