CALIBRATION WORK SHEET
Date of Calibration: ___________________ Sonde ID: ________________________
Technician: ___________________________
RP DO membrane changed? Y N Note: Wait 3 to 6 hours before calibrating for unattended
RP DO membrane o-ring changed? Y N deployments; run in Discrete mode for 10 minutes to accelerate
burn in.
(Rapid Pulse DO Only)
Turbidity wiper changed? Y N Chlorophyll wiper changed? Y N
ROX DO wiper changed? Y N BGA-PE wiper changed? Y N
BGA-PC wiper changed? Y N Rhodamine wiper changed? Y N
Note: If parking problems occur with optical probes having a serial number 07L (Dec 07) or older, be sure the firmware is
3.06 or later. Parking issues with optical probes having a serial number prior to 07L may be related to a dirty wiper body or
pad.
Record sonde battery voltage: _______________ (if applicable) Record Calibration Values
Standard Pre Cal / Post Cal
Record the following diagnostic numbers after calibration.
6560 Conductivity cell constant ____________ Range 5.0 + .45 Temperature ________ ____Sonde
Integrated conductivity cell constant_________ Range 5.0 ± .70 Conductivity ________ ____/____
pH mv Buffer 7 ____________ Range 0 +
50 mv pH 7 ________ ____/____
pH mv Buffer 4 ____________ Range +180 +
50 mv* pH 4 ________ ____/____
pH mv Buffer 10 ____________ Range -180 +
50 mv * pH 10 ________ ____/___
*Note: Millivolt span between pH 4 and 7 should be ≈ 165 to 180 mv ORP ________ ____/___
Millivolt span between pH 7 and 10 should be ≈ 165 to 180 mv Turbidity ________ ____/____
DO charge (RP only) ____________ Range 25 to 75 Turbidity ________ ____/____
DO gain ____________ Range 0.7 to 1.4 Turbidity 0.5________ ____/____
ODO gain ____________ Range 0.85 to 1.15 Chlorophyll ________ ____/____
Chlorophyll ________ ____/____
Turbidity standard used in calibration _______________________ DO RP ________ ____/____
Manufacturer and part number _______________________________ DO ROX ________ ____/____
BGA PE/PC ________ ____/____
Barometric Pressure: _________________mmHg BGA PE/PC ________ ____/____
DO % Calculated – (BARO mmHg divided by 7.6) = % saturation Rhodamine ________ ____/____
Example: 760 ÷ 7.6 = 100.0%
Depth Calibration - If zero was entered, record barometric pressure at time of calibration _____________mmHg
Depth Calibration - If offset depth was entered, record value ____________ meters/feet and pressure ____________ mmHg
Depth Calibration (Vented) – Acceptable calibration constant: 0.0 psig ± 0.15 ____________________
Notes:
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