Campbell CS210 User manual

CS210 Enclosure
Relative Humidity Sensor
Revision: 10/07
Copyright © 1996-2007
Campbell Scientific, Inc.

Warranty and Assistance
The CS210 ENCLOSURE RELATIVE HUMIDITY SENSOR is warranted
by CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and
workmanship under normal use and service for twelve (12) months from date
of shipment unless specified otherwise. Batteries have no warranty.
CAMPBELL SCIENTIFIC, INC.'s obligation under this warranty is limited to
repairing or replacing (at CAMPBELL SCIENTIFIC, INC.'s option) defective
products. The customer shall assume all costs of removing, reinstalling, and
shipping defective products to CAMPBELL SCIENTIFIC, INC. CAMPBELL
SCIENTIFIC, INC. will return such products by surface carrier prepaid. This
warranty shall not apply to any CAMPBELL SCIENTIFIC, INC. products
which have been subjected to modification, misuse, neglect, accidents of
nature, or shipping damage. This warranty is in lieu of all other warranties,
expressed or implied, including warranties of merchantability or fitness for a
particular purpose. CAMPBELL SCIENTIFIC, INC. is not liable for special,
indirect, incidental, or consequential damages.
Products may not be returned without prior authorization. The following
contact information is for US and International customers residing in countries
served by Campbell Scientific, Inc. directly. Affiliate companies handle
repairs for customers within their territories. Please visit
www.campbellsci.com to determine which Campbell Scientific company
serves your country. To obtain a Returned Materials Authorization (RMA),
contact CAMPBELL SCIENTIFIC, INC., phone [phone]. After an
applications engineer determines the nature of the problem, an RMA number
will be issued. Please write this number clearly on the outside of the shipping
container. CAMPBELL SCIENTIFIC's shipping address is:
CAMPBELL SCIENTIFIC, INC.
RMA#_____
815 West 1800 North
Logan, Utah 84321-1784
CAMPBELL SCIENTIFIC, INC. does not accept collect calls.

CS210 Table of Contents
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1. General .........................................................................1
2. Specifications ..............................................................1
3. Installation....................................................................1
4. Wiring............................................................................2
5. Programming ...............................................................3
5.1 CRBasic Examples ...................................................................................3
5.2 Edlog Examples........................................................................................5
6. Enclosure Humidity.....................................................7
7. Maintenance.................................................................7
Figures
1. CS210 Installed on a CR1000.....................................................................2
2. CS210 Wiring.............................................................................................2
Tables
1. Datalogger Connections..............................................................................2
2. Calibration for Relative Humidity..............................................................3
3. Wiring for Examples 3 and 4......................................................................5
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CS210 Enclosure Humidity Sensor
1. General
The CS210 Enclosure Humidity sensor contains an Elan HM2000 series precision
bulk-polymer relative humidity sensor. It is used to monitor the relative humidity
inside an equipment enclosure deployed in the field.
The CS210 was once known as the 10162.
NOTE
2. Specifications
Sensor: Elan HM2000 series precision bulk-polymer
Relative Humidity Measurement Range: 0 to 100% non-condensing
RH Output Signal Range: 0 to 1.0 VDC
Accuracy at 25°C
unspecified (0 to 10% Relative Humidity)
±3% RH (10 to 90% Relative Humidity)
unspecified (90 to 100% Relative Humidity)
Typical Long Term Stability: Better than 3% RH per year
Response Time (at 25°C, 90% response): 10 seconds for a 30% to 90% RH
step change
Operating Temperature: 0°C to +50°C
Storage Temperature: -40°C to +80°C
Probe Length: 2.6 cm (1.02 in.)
Probe Cross Section Area: 0.6 cm x 1.1 cm (0.23 in. x 0.43 in.)
Current Consumption: <0.5 mA
Supply Voltage: 5 ±0.25 VDC
Settling Time: 10 seconds
3. Installation
Mount the CS210 inside the environmental enclosure or onto a datalogger
using the mounting block and the wire tie included with the sensor (Figure 1).
The black outer jacket of the cable is Santoprene® rubber. This
compound was chosen for its resistance to temperature extremes,
moisture, and UV degradation. However, this jacket will
support combustion in air. It is rated as slow burning when
tested according to U.L. 94 H.B. and will pass FMVSS302.
Local fire codes may preclude its use inside buildings.
NOTE
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CS210 Enclosure Humidity Sensor
FIGURE 1. CS210 Installed on a CR1000
4. Wiring
Connections to Campbell Scientific dataloggers are given in Table 1 and
Figure 2. The probe is measured by a single-ended analog input channel.
TABLE 1. Datalogger Connections
Description Color CR200-series
CR800, CR850, CR1000,
CR3000, CR5000, CR9000(X),
CR10(X), CR500, CR510, CR23X 21X
Relative Humidity White Single-Ended Single-Ended Input Single-Ended
Input
Signal and Power
Reference Clear G G
Power Black C2 5 V Control Port
Signal and Power Reference Clear
5 VDC Power Black
Signal White
FIGURE 2. CS210 Wiring
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CS210 Enclosure Humidity Sensor
5. Programming
This section is for users who write their own datalogger programs. A
datalogger program to measure this sensor can be created using Campbell
Scientific’s Short Cut Program Builder Software. You do not need to read this
section to use Short Cut.
The relative humidity signal from the CS210 is measured using a single-ended
analog measurement (CRBasic instruction SEVolt or Edlog Instruction 1). The
CR200 series and 21X use a control port to power the CS210. At the
beginning of the program, the control port needs to be turned on, and the port
should remain on. It takes the CS210 approximately 10 seconds for the
reading to become stable after the port has been turned on. Depending on the
scan rate, the first few measurements from the CS210 could be low.
The probe output scale is 0 to 1000 millivolts for the relative humidity range of
0 to 100%. Table 2 provides calibration information for relative humidity.
TABLE 2. Calibration for
Relative Humidity
Units Multiplier
(% mV-1) Offset (%)
Percent 0.1 0
5.1 CRBasic Examples
Example 1 is a sample CRBasic program written for a CR1000, but our
CR800, CR850, CR3000, CR5000, and CR9000(X) dataloggers are
programmed similarly.
Example 2 is a CRBasic program written for a CR200 datalogger. The CR200
program turns on control port 2 to power the CS210. Notice that the scan rate
is set at 10 seconds. The sensor won’t give a good reading until the second
scan.
Example 1. Sample CR1000 Program
'CR1000 Series Datalogger
'SENSOR WIRING
'CS210
'Black: 5V
'White: SE1
'Clear: G
'Declare Public Variables
Public PanelTempC
Public Batt_Volt
Public Enc_RH
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CS210 Enclosure Humidity Sensor
'Define Data Tables
DataTable (Daily,1,-1)
DataInterval (0,1,Day,10)
Minimum (1,Batt_Volt,FP2,0,False)
Minimum (1,PanelTempC,FP2,False,False)
Maximum (1,PanelTempC,FP2,False,False)
Maximum (1,Enc_RH,FP2,False,False)
EndTable
'Main Program
BeginProg
Scan (10,Sec,0,0)
PanelTemp (PanelTempC,250)
Battery (Batt_volt)
'Measure CS210. Sensor is on all the time. Don't need a delay.
VoltSe (Enc_RH,1,mV2500,1,1,0,250,0.1,0)
'Set the sensor to 100% if it exceeds 100%.
If Enc_RH > 100 Then Enc_RH = 100
CallTable Daily
NextScan
EndProg
Example 2. Sample CR200 Program
'CR200 Series Datalogger
'To create a different opening program template, type in new
'instructions and select Template | Save as Default Template
'date:
'program author:
'SENSOR WIRING
'CS210
'Black: C2
'White: SE1
'Clear: G
'Declare Public Variables
'Example:
Public batt_volt
Public Enc_RH
'Define Data Tables
DataTable (Daily,1,-1)
DataInterval (0,24,hr)
Minimum (1,batt_volt,0,0)
Maximum (1,Enc_RH,False,0)
EndTable
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CS210 Enclosure Humidity Sensor
'Main Program
BeginProg
Scan (10,Sec)
Battery (Batt_volt)
'Power the CS210 using C2 and leave it on.
PortSet (C2,1 )
VoltSe (Enc_RH,1,1,0.1,0)
'Set the sensor to 100% if it exceeds 100%.
If Enc_RH > 100 Then Enc_RH = 100
CallTable Daily
NextScan
EndProg
5.2 Edlog Examples
Example 3 is a portion of a CR10(X) program, but our CR500, CR510, and
CR23X dataloggers are programmed similarly. Wiring used for the CR10(X)
program is included in Table 3.
Example 4 is an Edlog program written for a 21X Micrologger; wiring used for
the 21X program is included in Table 3. The 21X program turns on control
port 1 to power the CS210. Notice that the scan rate is set at 10 seconds. The
sensor won’t give a good reading until the second scan.
TABLE 3. Wiring for Examples 3 and 4
Description Color CR10(X) 21X
Relative Humidity White SE 6 (3L) SE 1 (1H)
Signal & Power Reference Clear G G
Power Black 5 VDC C1
Example 3. Sample CR10(X) Program
;Measure the CS210 relative humidity.
;
01: Volt (SE) (P1)
1: 1 Reps
2: 5 2500 mV Slow Range ;CR510 (2500 mV); CR23X (1000 mV)
3: 6 SE Channel ;White wire (SE 6), Clear wire (G)
4: 3 Loc [ RH_enc ]
5: .1 Mult
6: 0 Offset
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CS210 Enclosure Humidity Sensor
Example 4. Sample 21X Program
;{21X}
;
*Table 1 Program
01: 10 Execution Interval (seconds)
1: Batt Voltage (P10)
1: 1 Loc [ Batt_Volt ]
2: Panel Temperature (P17)
1: 2 Loc [ PnlTempC ]
;Turn the CS210 on and leave it on.
;The CS210 needs approximately 10 seconds to stabilize. First scan will be low.
3: Do (P86)
1: 41 Set Port 1 High
4: Volt (SE) (P1)
1: 1 Reps
2: 15 5000 mV Fast Range
3: 1 SE Channel
4: 3 Loc [ Enc_RH ]
5: 0.1 Multiplier
6: 0 Offset
5: If time is (P92)
1: 0 Minutes into a
2: 1440 Minute Interval
3: 10 Set Output Flag High
6: Set Active Storage Area (P80)
1: 1 Final Storage
2: 100 Array ID
7: Real Time (P77)
1: 1220 Year,Day,Hour/Minute (midnight = 2400)
8: Minimum (P74)
1: 1 Reps
2: 0 Value Only
3: 1 Loc [ Batt_Volt ]
9: Minimum (P74)
1: 1 Reps
2: 0 Value Only
3: 2 Loc [ PnlTempC ]
10: Maximum (P73)
1: 1 Reps
2: 0 Value Only
3: 2 Loc [ PnlTempC ]
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CS210 Enclosure Humidity Sensor
11: Maximum (P73)
1: 1 Reps
2: 0 Value Only
3: 3 Loc [ Enc_RH ]
*Table 2 Program
02: 0.0000 Execution Interval (seconds)
*Table 3 Subroutines
End Program
6. Enclosure Humidity
Change the enclosure desiccant packs (model number 4905) when the
enclosure relative humidity exceeds 40%.
Campbell Scientific recommends that all cable entry ports, that do not use a
sealed bulkhead connector, be sealed with plumbers putty and that desiccant
packs be placed inside the enclosure. Spikes in the enclosure humidity are a
result of opening the enclosure door and allowing ambient air inside the
enclosure. The enclosure relative humidity will return its nominal values
(values before the enclosure door was opened) in approximately three to four
hours.
7. Maintenance
The CS210 does not have any user serviceable parts nor does it require any
routine maintenance.
Replace the CS210 probe every three to five years of continuous use. If the
probe fails, replace it with a new one.
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CS210 Enclosure Humidity Sensor
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