Xiangjing (Shanghai) M&E Technology Co., Ltd
                                                                                                           
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11 Years
Since 2015
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Samson Process Control Unit Samson Controller 6493 Compact Controller for Panel Mounting

Price Negotiable
Price: US $1240.00 - 1360.00/ Unit
MOQ: 1
Delivery Time: 4-6 weeks
Brand: Samson
Product Description
Product Overview

The SAMSON Type 6493 is a pneumatic-only differential pressure controller that uses a diaphragm and torque-tube system to produce a 3–15 psig output signal. It is a no-electronics solution for maintaining differential pressure in steam, water and gas systems. Plants with pneumatic instrumentation or hazardous areas often select it for its simplicity and proven long-term reliability.

Technical Specifications
Parameter Specification
Measuring System Diaphragm force-balance
Set Point Range 0.02–2 bar (0.3–29 psi) typical
Supply Air 1.4 bar ±0.1 bar (20 psig ±1.5 psi)
Output 0.2–1.0 bar (3–15 psig)
Proportional Band Adjustable 2–200 %
Reset Time Adjustable 0.1–30 min
Ambient Temperature –20 … +80 °C (–4 … +176 °F)
Protection IP 54
Housing Aluminum (standard)
Application Industry
  • Steam supply differential control
  • Pump recirculation lines
  • Heat exchanger differential pressure
  • Tank pressure equalization
  • Pneumatic control in hazardous zones
Common Problems & Solutions
  • Problem: Hunting or instability → Solution: Adjust gain (proportional band) and reset time
  • Problem: No output pressure → Solution: Check supply air filter and nozzle cleanliness
  • Problem: Calibration drift → Solution: Easy local setpoint and zero adjustment
Replacement Models
  • Current SAMSON Type 6493 (still in production)
  • Older pneumatic differential controllers from SAMSON
Why Buy From Us
  • Genuine SAMSON product with traceability
  • Experienced in pneumatic controller retrofits
  • Fast spare parts (diaphragms, springs)
  • Competitive pricing & warranty
Stock & Delivery Time
  • Common ranges: in stock or 2–4 weeks
  • Special configurations: 4–8 weeks
RFQ Form

Please provide:

  • Required differential pressure range
  • Supply air pressure
  • Medium type & temperature
  • Connection style
  • Quantity & delivery need

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Xiangjing (Shanghai) M&E Technology Co., Ltd
Location Building 6, 98 Fulianyi Road, Yanghang Town, Baoshan District
Contact Person Edward Zhao

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