Spirax Sarco MS1 is a portable conductivity meter for boiler water and condensate, equipped with a carbon electrode sensor and automatic temperature compensation, offering three nominal ranges: 200 μS/cm, 2 mS/cm, and 20 mS/cm. The device is battery-powered and features automatic shutdown and a low-battery alarm. It is mainly used for on-site boiler water checks, feedwater quality inspections, conductivity and TDS estimation of condensate samples, and maintenance checks of installed conductivity sensors.
Spirax Sarco MS1 conductivity meter three-quarter product photo
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MS1 Conductivity Meter | Spirax Sarco
Portable conductivity meter for testing boiler water, feedwater, and condensate samples
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After-sales support
After-sales communication support is provided according to the order agreement.
Specifications
- Nominal conductivity ranges
- 0–200 μS/cm, 0–2 mS/cm, 0–20 mS/cm
- Range basis
- Based on the nominal ranges in IM-P403-24 AB Issue 3 and the instrument panel; the range table in the Chinese version of TI-P403-25 AB Issue 4 is inconsistent with the panel markings.
- Resolution
- 0.1 μS/cm
- Measurement accuracy
- ±1.5% or ±3 digits (whichever is greater), 25°C
- Temperature compensation
- Automatic temperature compensation, 2%/°C, reference temperature 25°C
- Maximum probe operating temperature
- 45°C
- Calibration range
- ±20%, approximately 20 turns
- Sensor type
- Carbon electrode PVC cell with built-in temperature sensor
- Power supply
- PP3 or equivalent battery
- Low battery indication
- With low battery alarm indication
- Automatic switch-off
- Automatic switch-off timer
Application scenarios
On-Site Boiler Water Conductivity Testing
Measures the conductivity of boiler water samples to assess the level of dissolved ions. The sample temperature must be kept below the probe's maximum operating temperature of 45°C.
Routine Boiler Feedwater Quality Testing
Measures the conductivity of samples collected at boiler feedwater sampling points to check the level of dissolved ions. The MS1 provides measurement ranges in the microsiemens per centimetre range, making it suitable for on-site spot checks of feedwater samples.
Condensate Conductivity Measurement and TDS Estimation
Measures the conductivity of condensate samples from steam systems and uses the result to estimate the total dissolved solids (TDS) level. The sample temperature must be kept below the probe's maximum operating temperature of 45°C during measurement.
Boiler Conductivity Sensor Maintenance Inspection
Performs maintenance inspections on installed conductivity sensors by measuring AC impedance through an inserted extension lead to check sensor operating condition.
FAQ
Which liquids is the MS1 conductivity meter suitable for measuring?
The MS1 is used for liquid conductivity measurement and is suitable for boiler water, feedwater, and condensate samples used to estimate TDS values.
What measurement ranges does the MS1 offer?
The MS1 offers three nominal ranges: 0–200 μS/cm, 0–2 mS/cm, and 0–20 mS/cm.
What are the features of the MS1's temperature compensation function?
The MS1 features automatic temperature compensation at 2%/°C, with a reference temperature of 25°C.
What temperature limits apply when using the MS1?
The recommended maximum operating temperature for the MS1 probe is 45°C. The specific configuration must be confirmed based on the actual model and application conditions.
What calibration and status monitoring functions does the MS1 provide?
The MS1 can be calibrated via an adjustment screw and is equipped with an automatic switch-off timer and low battery alarm indication; a plug-in extension lead can be used to measure AC impedance to check sensor operation.