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Mass Flow Transmitter: Remote vs Integral Mount
Quick Answer
Integral mount transmitters bolt directly onto the sensor and cost less to install. Remote mount transmitters keep electronics away from heat, vibration, and tight spaces. Most engineers in oil and gas, chemical, and high-temperature water applications choose the remote option when the process temperature exceeds 150 °C or when the meter sits in a Zone 1 hazardous area.
Why Mounting Style Matters for Mass Flow Meters
A Coriolis mass flow meter has two parts: the sensor and the transmitter. The transmitter drives the sensor tubes, processes the phase shift signal, and outputs flow, density, and temperature. Where you place that transmitter is not a minor detail. We have seen many customer sites where a wrong selection caused display fogging, signal drift, or early board failure. In a palm oil refinery in Indonesia, the maintenance team could not read the integral display because the meter sat under a pipe rack at 2 meters high. They later swapped to a remote mount transmitter placed at eye level near the walkway. That single change cut daily operator rounds by fifteen minutes.
Integral Mount Transmitter: Single Unit Design
An integral mount package houses the transmitter directly on the sensor body. You get one compact unit with no interconnecting cable. Typical pipe sizes range from DN10 to DN80. Ambient limits often sit at -20 °C to 60 °C and the process temperature stays below 150 °C. A dairy plant in Victoria, Australia uses an integral Coriolis meter on a CIP return line. The pipe runs at 85 °C and the room is washdown rated. The IP67 sealed housing handles the moisture and the single piece install saved them a junction box and cable run. Because there is no cable between sensor and transmitter, signal integrity is strong and factory calibration stays locked. The upfront price is lower than a remote setup. The downside appears when the pipe vibrates. A pump cavitation or nearby compressor can shake the electronics and shorten component life. In practice, we tell customers to stay with integral mounts only when the meter location offers stable ambient conditions and easy visual access.
Remote Mount Transmitter: Separate Housing
A remote mount transmitter sits apart from the sensor and connects through a dedicated 9-wire or 12-wire shielded cable. Standard cable lengths from Silver Instruments run 5 m, 10 m, or 20 m. Extended runs reach 50 m with a booster board. This design puts the transmitter in a cool, low-vibration zone. The sensor can then handle process temperatures up to 200 °C or even 350 °C with high-temperature wafer designs. A gas terminal in Oman runs a Coriolis meter on a fuel gas line at 60 bar and 180 °C. The sensor sits in an ATEX Zone 1 location. The transmitter is wall-mounted 30 meters away inside an air-conditioned analyzer shelter. The operator reads mass flow in kg/h, density in kg/m³, and diagnostic codes on a bright LCD without opening a hot permit. Another case is a paint manufacturer in Vietnam. Their mixing skid has tight pipework with no room for a transmitter head. The remote mount allowed the sensor in the congested zone and the transmitter outside the frame, protected from solvent splashes. The trade-off is cable cost and the need to match capacitance length during order entry. If you swap a sensor later, the cable kit often needs replacement too.
Key Selection Factors: Remote or Integral
Process temperature is the first gate. If the fluid temperature exceeds 150 °C at the meter body, go remote. Vibration is second. A pipeline shaking above 1 g acceleration at the mounting point almost always forces a remote mount to pr
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Silver Instruments Coriolis Mass Flow Transmitter Options
Silver Instruments supplies both integral and remote mount configurations on our SIL-COR series Coriolis mass flow meters. Standard outputs include 4-20 mA HART, Modbus RS485, and pulse. Accuracy reaches 0.1% of rate for liquids and 0.5% for gases. Sensor sizes span DN3 up to DN150. Wetted parts come in 316L stainless steel with optional Hastelloy C-22. Remote cable options include 5 m, 10 m, 20 m, and 50 m tested lengths. Transmitter housings offer IP65 or IP67 ratings. For hazardous areas, our team supplies ATEX and IECEx certificates for Zone 1 and Zone 2 locations. We factory-match each remote sensor and transmitter pair and ship with serialized test reports. Most engineers skip the long comparison cycle and send us a few numbers. Tell us your fluid, pressure in bar, temperature in °C, pipe size DN, and flow range. Mention "remote" or "integral" in your request. Our application team returns a fixed price and lead time within one working day. Send your query through flow-meter.com.au or email our sales group directly.
FAQ
What cable length can I order for a remote mount mass flow transmitter? Silver Instruments provides standard lengths of 5 m, 10 m, and 20 m. Extended 50 m runs are available with a signal booster option. Longer lengths need factory review.
Can I switch from integral to remote mount later in the field? Not easily. The sensor and transmitter are calibrated as a matched set. A field conversion requires a new cable kit, a remote transmitter board, and a pressure-tight junction box. Factory recertification may also be needed for hazardous area tags. It is often cheaper to order the correct style from the start.
Does remote mounting affect measurement accuracy? When the cable length is within the specified limit and the shielded cable is installed correctly, accuracy stays the same. The factory tuning compensates for cable capacitance. Do not cut or splice the factory cable.
Which mount style works best for high-pressure natural gas? Remote mount is the dominant choice. Gas compression stations often have pipe vibration and the meter sits in a classified area. A remote transmitter in a non-hazardous building simplifies daily checks and loop power wiring.
What information does Silver Instruments need for a quick quote? Share your fluid, operating pressure in bar, temperature in °C, pipe diameter (DN), and required flow range. Also state if you need remote mount and the desired cable length. We send a specification and price sheet within hours.
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