Campbell Scientific CR510 Basic Datalogger - Manual (Page 111)

SECTION 9. INPUT/OUTPUT INSTRUCTIONS
9-7
CAUTION: Never excite the 207 probe with
DC excitation because the RH chip will be
damaged.
A 1 before the excitation channel number (1X)
causes the channel to be incremented.
The maximum RH polynomial error is given
here:
Curve Fit Error --
Range (%RH) Error (%RH)
10 - 100 +4
15 - 94 +1
PARAM. DATA
NUMBER TYPE DESCRIPTION
01: 2 Repetitions
02: 2 First single-ended
channel for RH
measurement
03: 2 Excitation channel
number
04: 4 Input location for first
compensating
temperature
measurement (°C)
05: 4 Input location for first
R.H. measurement
06: FP Multiplier
07: FP Offset
Input locations altered: 1 per instruction
*** 16 TEMPERATURE FROM ***
PLATINUM R.T.D.
FUNCTION
This instruction uses the result of a previous RTD
bridge measurement to calculate the temperature
according to the DIN 43760 specification adjusted
(1980) to conform to the International
Electrotechnical Commission standard. The range
of linearization is -200° to 850°C. The error in the
linearization is less than 0.001°C between -100°
and +300°C, and is less than 0.003°C between -
180° and +830°C. The error (T calculated - T
standard) is +0.006° at -200°C and -0.006° at
+850°C. The input must be the ratio R/Ro, where
R is the RTD resistance and Ro the resistance of
the RTD at 0°C (Sections 7.9 and 7.10). A
multiplier of 1 and an offset of zero yields
temperature in degrees Celsius.
PARAM. DATA
NUMBER TYPE DESCRIPTION
01: 2 Repetitions
02: 4 Input location of R/Ro
03: 4 Input location of result
04: FP Multiplier
05: FP Offset
Input locations altered: 1 per repetition
*** 17 INTERNAL TEMPERATURE ***
FUNCTION
This instruction measures the temperature (°C)
of a thermistor on the CR510 analog board.
PARAM. DATA
NUMBER TYPE DESCRIPTION
01: 4 Input location number
for temperature
Input locations altered: 1
*** 18 MOVE TIME TO INPUT LOCATION ***
FUNCTION
This instruction takes the current time in
seconds into the minute, minutes into the day,
or hours into the year and does a modulo divide
(see Instruction 46) on the time value with the
number specified in the second parameter. The
result is stored in the specified input location.
Entering 0 or a number which is greater than
the maximum value of the time for the second
parameter will result in the actual time value
being stored.
PARAMETER 1 CODES
Code Time Units
0 Seconds into minute (maximum 60)
1 Minutes into current day (maximum
1440)
2 Hours into current year (maximum
8784)
3 Store yr,day,hr,min,sec into 5 input
locations (modulo divide not used)
PARAM. DATA
NUMBER TYPE DESCRIPTION
01: 2 Time Code
02: 4 Number to modulo
divide by
03: 4 Input location number
Input locations altered: 1 or 5