Toroidal conductivity sensor with analog and digital output (14 pages)
Summary of Contents for Water Analytics AquaMetrix 60 Series
Page 1
OPERATING INSTRUCTION MANUAL 60-Series Sensor Differential 5-Wire pH & ORP N116-140 R3 AquaMetrix, by Water Analytics Inc. Tel: (978) 749-9949 100 School Street www.AquaMetrix.com Andover, MA 01810...
GENERAL INFORMATION This manual covers all AquaMetrix 60-series differential measurement pH and ORP sensors. Figure 1 shows available configurations. If you can’t find your part number here, it may have been obsoleted or replaced with a newer model – please contact your distributor for information. Figure 1 - Part number decoding for 60-series differential sensors The 60-series sensors feature the AquaMetrix differential design for long lifetime, user serviceability and more accurate readings.
INSTALLATION Mounting Instructions Specific instructions for each type of sensor are given in the following pages. Common to all sensors are the following instructions: 1. If the distance between the sensor and the instrument is such that a direct connection is not possible, the sensor cable should be routed to a junction box with a terminal strip (AquaMetrix Part No.
Refer to Figure 4 below. 1. A submersion mounting kit, AM-ARM-8, is available from Water Analytics which includes 4 ft. of 1” CPVC pipe, 1-1/2” x 1” reducer, a strain relief fitting and wire mounting bracket. Proceed as follows, either with the kit or with your own hardware.
Figure 5 - Electrode protector AM-PTR-8 installation 3.3.2 Flow-through mounting in a TEE Refer to Figure 6 below 1. Apply pipe sealant to the electrode end of the sensor and screw it into the 1-1/2” NPT bushing. 2. Slide bushing into modified TEE 3.
Refer to Figure 8 below 1. A submersion mounting kit, AM-ARM-5, is available from Water Analytics which includes 4 ft. of 1” CPVC pipe, 1” adapter, a strain relief fitting and wire mounting bracket. Proceed as follows, either with the kit or with your own hardware.
Figure 10 - Flow through installation using AM-TEE-5 3.4.3 Sanitary fitting The R5-series can be installed in 2” sanitary fitting using sanitary flange (part AM-SFL-5). Refer to Figure 11 below. Figure 11 - 2in sanitary flange AM-SFL-5 Please note that the sanitary fitting doesn’t make sensor suitable for sanitary application. 3.4.4 Variable insertion (R5-series only) Refer to Figure 12 below.
Figure 12 - Variable insertion using AM-CFT-R5 compression fitting Using attachment AM-CFT-R5 the standard R5 series sensor can be used in applications that require variable insertion. AM-CFT-R5 has 1-1/2” NPT process connection and allow to vary insertion depth from .55” to 3.67”...
If the system can’t be calibrated after cleaning the sensor, it may be necessary to replace the standard cell solution and/or the salt bridge. A salt bridge kit is available from Water Analytics for this purpose (Part No. AM-SBK3-R8 for a 3-pack and AM-SBK10-R8 for a 10-pack).
To diagnose pH sensor at least two pH buffer solutions (pH 7 and either pH 4 or pH 10) and a controller (or high precision voltmeter) are required. pH buffer solutions can be purchased from Water Analytics, see part numbers in Appendix A.
The actual value is noted on the bottle. ORP calibration solutions can be purchased from Water Analytics, see part numbers in Appendix A. 1. Clean the sensor as described in Section 4.1. If the system cannot be calibrated, replace the salt bridge and pH 7 buffer solution as described in 4.3 or 4.4.
e. Measure the voltage between the red and green wires. The reading should be within ±50mV from the ORP value listed on the bottle; otherwise, the sensor is defective. If the voltage is OK proceed to the next step. Rinse the sensor and place it in 600 mV solution. Allow it to stabilize then check the voltage again between the red and green wires.
–5°C. Water Analytics cannot be responsible for shipping damage nor for damage due to frozen electrodes. For safety reasons, Water Analytics cannot accept sensors which have not been thoroughly cleaned to remove...
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