Tissin TS900 TS905 Smart Valve Positioner 4-20mA HART Stainless Steel Digital Control Valve Positioner
Tissin TS900 TS905 Smart Valve Positioner for Pneumatic Control Valves
Product Overview
The Tissin TS900 / TS905 is a smart valve positioner used to control pneumatic valve actuators from a 4–20 mA DC input signal.
It is designed for both linear and rotary control valve applications. The positioner monitors the commanded valve position and regulates pneumatic pressure to the actuator accordingly.
For users comparing the two models, the key difference is the body construction:
- TS900: Aluminum die-cast body, 3.5 kg
- TS905: Stainless steel 316 body, 7.0 kg
Both models use the same basic signal, air supply, stroke and performance specifications in the published product documentation.
The series provides an LCD display and four buttons for local operation. It also includes functions such as automatic setup, partial stroke testing, alarm functions and Auto/Manual operation.
Technical Specifications
| Technical Parameter | TS900 | TS905 |
|---|---|---|
| Model | TS900 | TS905 |
| Type | Smart Valve Positioner | Smart Valve Positioner |
| Input Signal | 4–20 mA DC | 4–20 mA DC |
| Impedance | 500 Ω at 20 mA DC | 500 Ω at 20 mA DC |
| Supply Pressure | 0.14–0.7 MPa | 0.14–0.7 MPa |
| Linear Valve Stroke | 10–150 mm | 10–150 mm |
| Rotary Valve Range | 0–90° | 0–90° |
| Air Connection | PT1/4, NPT1/4 | PT1/4, NPT1/4 |
| Gauge Connection | PT1/8, NPT1/8 | PT1/8, NPT1/8 |
| Conduit | G(PF)1/2, NPT1/2 | G(PF)1/2, NPT1/2 |
| Explosion-Proof Rating | Ex db IIC T5/T6 | Ex db IIC T5/T6 |
| Enclosure Protection | IP66 | IP66 |
| Standard Temperature | -30°C to +85°C | -30°C to +85°C |
| Low Temperature Type | -40°C to +85°C | -40°C to +85°C |
| Linearity | ±0.5% F.S. | ±0.5% F.S. |
| Sensitivity | ±0.2% F.S. | ±0.2% F.S. |
| Hysteresis | ±0.5% F.S. | ±0.5% F.S. |
| Repeatability | ±0.3% F.S. | ±0.3% F.S. |
| Air Consumption | <2.3 LPM at 0.14 MPa | <2.3 LPM at 0.14 MPa |
| Flow Capacity | >100 LPM at 0.14 MPa | >100 LPM at 0.14 MPa |
| Required Air Quality | Class 3, ISO 8573-1 | Class 3, ISO 8573-1 |
| Body Material | Aluminum Die Cast | Stainless Steel 316 |
| Net Weight | 3.5 kg | 7.0 kg |
Optional configurations: HART 7, 2-wire position transmitter and alarm switch. Position transmitter and alarm switch options are specified with a 9–30 V DC supply.
Application Industry
Chemical Processing
Suitable for pneumatic valve position control where a 4–20 mA command is used.
Oil & Gas
Can be used for pneumatic control valves in process and related industrial systems.
Petrochemical
Applicable to automated valve control in process equipment.
Power Plants
Can be used with pneumatic control valves in power-generation process systems.
Water & Wastewater
Suitable for automated pneumatic valve applications in water treatment processes.
General Industrial Automation
The positioner can be integrated into control valve loops using a compatible pneumatic actuator and control system.
Common Problems
4–20 mA Signal Is Present but the Valve Does Not Move
Check whether the instrument air supply is within the specified range. Then inspect the actuator, pneumatic tubing and mechanical linkage.
Valve Position Does Not Follow the Command
Check the feedback mechanism and perform the appropriate calibration procedure. The positioner must be mechanically matched to the valve actuator.
Air Consumption Is Higher Than Expected
Check the pneumatic connections and air leakage around the actuator and tubing. Air consumption should not be assessed from the positioner alone without checking the complete pneumatic circuit.
Positioner Shows an Alarm
Check the alarm condition and the valve/actuator operating state. If an alarm switch is installed, also check its wiring and power supply.
Need HART Communication
Confirm the positioner configuration before purchase. HART 7 is an optional configuration rather than a feature that should automatically be assumed on every TS900/TS905 unit.
Replacement Models
For buyers replacing an existing smart valve positioner, TS900 and TS905 should be selected after checking the complete valve assembly.
Important replacement information includes:
- Positioner model
Existing brand and model. - Valve type
Linear or rotary. - Actuator
Pneumatic actuator model and operating arrangement. - Travel
Required linear stroke or rotary angle. - Signal
Control system output, normally 4–20 mA DC for this series. - Air supply
Available instrument air pressure. - Housing material
TS900 aluminum die cast or TS905 stainless steel 316. - Optional functions
HART, position transmitter or alarm switch. - Installation environment
Temperature and applicable hazardous-area requirements.
There is no single universal replacement model because the mounting arrangement, feedback mechanism and actuator configuration must also match.
Why Buy From Us
Product Information Check
We check the required model and configuration before quotation so that the supplied positioner matches the project requirements as closely as possible.
TS900 / TS905 Supply
Both aluminum-body TS900 and stainless-steel TS905 configurations can be quoted according to availability and project requirements.
Replacement Project Support
For replacement work, the existing product nameplate is useful for confirming the required model and optional functions.
Valve Automation Sourcing
Control valves, actuators, valve positioners and related industrial instruments can be sourced for the same project.
Export Order Support
We handle product quotation, order coordination and international shipment arrangements for overseas buyers.
Stock & Delivery Time
The availability of Tissin TS900 and TS905 depends on the exact model, options and order quantity.
Products with HART, position transmitter or alarm switch configurations may follow a different supply schedule from standard versions.
For an accurate delivery estimate, please provide:
- TS900 or TS905
- Quantity
- Required options
- Destination country
- Target delivery date
Current stock and lead time should be confirmed before the purchase order is placed.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.