YOKOGAWA SR1015B85-2MN*1C/L1D99078
Product Introduction:
The SR1015B85-2MN*1C/L1D99078 is a 10-channel universal input paperless recorder from Yokogawa’s SR1000 series. The model code decodes as: SR1000 = SR1000 series, 10 = 10 input channels, 15 = 1/8 DIN (96 × 96 mm) front panel, B85 = specific configuration, 2MN = 2-point Modbus TCP/IP network, *1C = specific serial/option, L1D99078 = serial number. This is a high-channel-count recorder with dual Ethernet ports for network redundancy.
Detailed content
Technical Specifications:
| Parameter | Value |
|---|---|
| Recorder Series | SR1000 |
| Number of Input Channels | 10 universal inputs |
| Panel Size | 96 mm × 96 mm (1/8 DIN, square) |
| Input Types | DC voltage (0–5 V, 1–5 V), DC current (0–20 mA, 4–20 mA), Thermocouple (B, E, J, K, L, N, R, S, T, U, W), RTD (Pt100, JPt100, Cu50, Pt1000), Frequency (0–1 kHz), Contact (ON/OFF) |
| Recording Methods | Trend (continuous), Event, Snapshot, Batch |
| Network | 2 × Ethernet 10/100 BASE-T (2MN = 2 Modbus network points) |
| Serial Communication | RS-232C / RS-485 (*1C option) |
| Display | 128 × 64 dot-matrix LCD (monochrome, backlit) |
| Memory | 4 MB Flash (approx. 2 million data points) |
| Recording Interval | 0.1 s to 60 min (selectable per channel) |
| Alarm Output | 4 alarm relay outputs (configurable: HIGH, LOW, HH, LL, DEVIATION) |
| Power Supply | 100–240 V AC (50/60 Hz) or 24 V DC |
| Power Consumption | Max. 10 VA (AC), 5 W (DC) |
| Operating Temperature | 0°C to +50°C |
| Protection Rating | IP66 / NEMA 4X (front panel) |
| Weight | Approx. 500 g |
| Model Code B85 | 10-ch universal input + 4 alarm + dual Ethernet + serial |
| Serial Number | L1D99078 |
Functional Features:
- 10 universal input channels — highest channel count in 1/8 DIN class
- Dual Ethernet ports (2MN) — network redundancy or separate networks (e.g., control + IT)
- RS-232C/RS-485 serial — direct connection to legacy PLCs, modems, printers
- 4 alarm relay outputs — independent per channel or shared
- 4 MB Flash memory — stores up to 60 days of data at 1-second sampling
- Modbus TCP/IP (dual) + Modbus RTU (serial) — universal protocol support
- Web server — remote viewing via standard web browser (no client software)
- FTP client/server — automated scheduled data export
- Batch recording — timestamp-based batch start/stop with data export
- Data security: 3-level password protection, audit trail option
Material Composition:
- Front Bezel: Polycarbonate (UL94 V-0), black matte
- Rear Housing: ABS + PC blend, flame retardant (UL94 V-0)
- Terminal Block: Phosphor bronze, tin-plated, screw-clamp (2 rows × 10 channels)
- PCB: FR-4, double-sided, conformal coated
- LCD: FSTN monochrome, white LED backlight
- Ethernet Ports: RJ45, with integrated magnetics (isolation: 1.5 kV)
Structural Features:
- 96 × 96 mm square front panel (1/8 DIN)
- Depth behind panel: approx. 110 mm (deeper than ANR11 due to more channels)
- 2× RJ45 Ethernet ports + 1× DB9 serial port on rear
- 4× alarm relay terminals on rear terminal block
- Screw-clamp terminals: wire size 0.5–2.5 mm² (AWG 20–14)
- IP66 front — sealed against dust and water jets
Working Principle:
Each of the 10 input channels has a dedicated signal conditioning ASIC that handles TC cold-junction compensation, RTD ratiometric measurement, mA/mV scaling, and frequency counting. Signals are digitized via 16-bit A/D converters and stored in a 4 MB circular Flash buffer. The dual Ethernet ports run independent Modbus TCP server instances — one for control network (e.g., PLC/DCS) and one for IT network (e.g., historian). The serial port supports Modbus RTU master/slave for legacy device communication. Alarm logic runs on a dedicated microcontroller for deterministic response (< 100 ms).
Advantages & Highlights:
- 10 channels in 1/8 DIN — highest density in class, saves 70% panel space vs. single-channel recorders
- Dual Ethernet — network redundancy eliminates single point of failure
- Serial + Ethernet + Web — connects to any system, old or new
- 4 alarm relays — local alarm indication independent of network
- 4 MB memory — longest recording duration in compact form factor
Applicable Industries:
- Oil & Gas (wellhead monitoring, pipeline SCADA)
- Power Plants (boiler, turbine, generator monitoring — 10+ points per unit)
- Chemical Plants (reactor temperature, pressure, flow, level — 10+ loops)
- Water/Wastewater (multi-point treatment process monitoring)
- Manufacturing (OEE data collection from 10+ machines)
- Pharmaceutical (multi-point batch recording for FDA compliance)
Installation Requirements:
- Panel cutout: 92 mm × 92 mm (for 96 × 96 mm bezel with gasket)
- Mounting depth: ≥ 115 mm behind panel
- Ethernet: Cat5e/Cat6, max. 100 m per segment
- Serial: RS-485 max. 1200 m (with 120 Ω termination at each end)
- Use shielded cable for all input connections — ground at recorder end
- Power: dedicated circuit, 10 A fuse recommended
Usage Precautions:
- Do not exceed 10 input channels — each channel has dedicated terminals, do not daisy-chain
- Verify TC type matches configuration — wrong TC type = error up to hundreds of °C
- Do not apply > 30 V DC or > 250 V AC to any input
- Configure dual Ethernet IP addresses on different subnets if using redundancy
- Back up data weekly via FTP — 4 MB fills in ~60 days at 1-second sampling
- Firmware update via Ethernet only — do not use serial for firmware
- Serial number L1D99078 — record for warranty and service tracking












