Trendview STRIPLITE-INDICATOR-2SLL: Retrofit-Ready Indicator for 2SLL Series Control Systems
The Trendview STRIPLITE-INDICATOR-2SLL is a retrofit-ready indicator module engineered for seamless integration into legacy 2SLL Striplite series control systems. As original Trendview Striplite recorders approach end-of-life and spare parts become increasingly scarce, this module provides a verified drop-in replacement path that preserves existing panel cutouts, terminal wiring layouts, and operator interface conventions — minimising engineering rework and unplanned downtime during system modernisation projects.
Sourced directly from authorised distribution channels and subject to full pre-shipment functional testing, the STRIPLITE-INDICATOR-2SLL is held in stock to support urgent breakdown recovery as well as planned retrofit programmes. Every unit ships with a 12-month warranty covering manufacturing defects and functional performance, backed by dedicated technical support for installation and commissioning queries.
Upgrade Compatibility Table
| Parameter | Detail |
|---|---|
| SKU / Part Number | STRIPLITE-INDICATOR-2SLL |
| Brand | Trendview Recorders |
| Compatible Series | 2SLL Striplite Series |
| Module Function | Strip Chart Indicator / Recorder Display Module |
| Replaces / Supersedes | Legacy 2SLL Striplite indicator assemblies (discontinued) |
| Panel / Rack Interface | Standard 2SLL backplane connector; no mechanical modification required |
| Terminal Wiring | Compatible with existing field wiring; verify terminal numbering against original loop drawing |
| Communication Protocol | Analogue signal loop; confirm 4–20 mA or mV input range against site specification |
| Power Supply Requirement | Confirm supply rail capacity on existing 2SLL power module before installation |
| Commissioning Requirement | Span and zero calibration recommended post-installation; chart drive alignment check advised |
| Pre-Shipment Testing | Full functional test performed on every unit prior to despatch |
| Warranty | 12 months from date of shipment |
| Country of Origin | United Kingdom |
| Weight | 360 g |
Retrofit Planning for Existing Automation Systems
A successful retrofit of the STRIPLITE-INDICATOR-2SLL into an operational plant environment requires careful pre-engineering to avoid configuration errors and extended outages. The following planning checklist reflects common site conditions encountered during 2SLL series upgrades.
Power Budget Verification: Before removing the existing indicator, audit the 2SLL power module — typically a dedicated DC rail module within the Striplite enclosure — to confirm it can sustain the load of the replacement unit. Ageing power supplies in legacy Striplite cabinets may be operating close to rated capacity, particularly where additional I/O expansion modules or communication adapters have been added over the system’s service life.
Terminal and Wiring Audit: Cross-reference the existing loop drawings against the STRIPLITE-INDICATOR-2SLL terminal assignment. In many 2SLL installations, field wiring was landed directly on the indicator’s input terminals. Confirm that thermocouple, RTD, or 4–20 mA signal types match the replacement module’s input configuration. Where the original unit included a Trendview chart drive mechanism, verify that the chart motor wiring and paper advance connections are correctly re-terminated.
Backplane and Rack Seating: The 2SLL Striplite chassis uses a proprietary backplane connector. Inspect the backplane socket for pin damage or oxidation before inserting the replacement module. In installations where the original recorder has been in service for more than ten years, backplane cleaning with an appropriate contact cleaner is recommended prior to module insertion.
Module Address and Configuration: Unlike modern PLC platforms such as the Siemens S7-300 or Allen-Bradley ControlLogix, the 2SLL Striplite series uses hardware DIP switches or jumper links for range and alarm setpoint configuration. Photograph or record all switch positions on the outgoing module before removal to replicate the configuration on the STRIPLITE-INDICATOR-2SLL.
HMI and SCADA Integration: Where the 2SLL recorder feeds a supervisory system via a serial communication link — for example, through a Trendview communications module or a third-party Modbus RTU gateway — verify that the replacement indicator’s serial output parameters (baud rate, parity, station address) are set to match the existing SCADA configuration. Failure to replicate these settings will result in loss of trend data at the historian or DCS interface, which may include systems such as a Honeywell Experion or Yokogawa CENTUM integration layer.
I/O and Alarm Relay Wiring: Many 2SLL installations include relay output modules for high/low alarm annunciation wired to field devices or DCS digital input cards. Confirm that the alarm relay contacts on the STRIPLITE-INDICATOR-2SLL are correctly wired and that setpoints are re-entered following installation. Where the site uses a separate Trendview alarm module or an external relay expansion card, verify that the interlock logic remains intact after the swap.
Chart and Pen Mechanism: If the installation requires the chart recording function to remain active, confirm that the correct chart roll type and pen cartridge compatible with the 2SLL Striplite mechanism are available on site before commencing the retrofit. Sourcing chart consumables in advance avoids a secondary delay after the module is installed.
Programming and Logic Compatibility: For sites where the Striplite recorder interfaces with a programmable controller — such as a Mitsubishi MELSEC Q-series or an Omron CJ2 CPU — confirm that the analogue input scaling in the PLC programme matches the signal range of the replacement indicator. No firmware upload is required for the STRIPLITE-INDICATOR-2SLL itself, but PLC analogue input scaling blocks should be reviewed if the original indicator had a non-standard input range.
Commissioning Cable and Tools: Have a calibration source (loop calibrator or millivolt source) available on site to perform span and zero verification after installation. A Trendview-compatible programming cable or configuration tool may be required if the unit includes a digital configuration interface.
Downtime Control During System Migration
Minimising production interruption during a 2SLL Striplite indicator replacement requires a structured isolation and swap procedure. The recommended approach is to schedule the replacement during a planned maintenance window and to prepare a pre-tested spare unit — the STRIPLITE-INDICATOR-2SLL — in advance, with all DIP switch and jumper settings pre-configured to match the outgoing module.
Before isolating the loop, confirm with the control room that the affected measurement point can be placed in manual mode or bypassed at the DCS or PLC level. For critical process loops, arrange for a temporary portable recorder or a handheld process indicator to maintain measurement visibility during the swap interval. This is particularly important in continuous process environments where the 2SLL recorder provides the primary indication for a temperature, pressure, or flow control loop.
The physical swap of the STRIPLITE-INDICATOR-2SLL — including terminal re-connection, backplane seating, and initial power-on — typically takes 30 to 60 minutes for a prepared technician. Allow additional time for span verification, alarm setpoint re-entry, and SCADA reconnection confirmation. A structured commissioning checklist, signed off by the site instrument engineer, is recommended before returning the loop to automatic control.
Where the retrofit is part of a broader control system upgrade — for example, migrating from a standalone Striplite recorder network to a centralised data acquisition system — plan the STRIPLITE-INDICATOR-2SLL installation as an interim step that maintains process visibility while the new system is being configured and validated in parallel.
Retrofit Support FAQ
Q: Is the STRIPLITE-INDICATOR-2SLL a direct drop-in replacement for all 2SLL Striplite indicator variants?
A: The STRIPLITE-INDICATOR-2SLL is designed as a compatible replacement for the standard 2SLL Striplite indicator assembly. However, the 2SLL series includes variants with different input ranges, chart widths, and communication options. Please confirm your existing unit’s input type (thermocouple, RTD, or mA), chart width, and any fitted communication modules before ordering to ensure full compatibility. Our technical team can assist with cross-referencing your existing part number.
Q: What pre-shipment testing is performed, and what does the 12-month warranty cover?
A: Every STRIPLITE-INDICATOR-2SLL unit undergoes a full functional test prior to despatch, including input signal response, display accuracy, and (where applicable) chart drive operation. The 12-month warranty covers manufacturing defects and functional failures under normal operating conditions. It does not cover damage resulting from incorrect installation, overvoltage, or environmental conditions outside the module’s rated specification.
Q: Can the STRIPLITE-INDICATOR-2SLL be installed without specialist Trendview tooling?
A: In most cases, installation requires only standard instrument technician tools — a loop calibrator, a screwdriver set, and the original loop drawings. If the unit includes a digital configuration interface, a Trendview-compatible configuration cable may be required to set input range parameters. Contact our technical support team if you require guidance on configuration tooling for your specific site variant.
Q: How quickly can the unit be despatched, and is express shipping available?
A: Units held in stock are typically despatched within 1–2 business days of order confirmation. Express and priority freight options are available for urgent breakdown situations. Contact our sales team at sales@smartnexmsk.com or +86 18259474341 to confirm current stock status and arrange expedited shipment.
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Contact: sales@smartnexmsk.com | +86 18259474341