Datasheet summary
Liquicap FTZ61
PDF datasheet mirror for Liquicap FTZ61 (Endress + Hauser Level measurement). Verify with OEM before design.
Summary
Product Identification
- Product Name: Liquicap FTZ61
- Product Type: Transmitter for foam detection in single-use bioreactors
- Document Number: BA02352D/06/EN/02.25-00
- Device Firmware Version: V01.09
Intended Use
The Liquicap FTZ61 is a compact instrument for capacitive measurement of foam level in non-conducting containers (e.g., plastic or glass) in industrial settings, specifically for single-use bags in cell culture processes. The device and sensor are designed for external mounting and are not intended for direct contact with foam.
Safety Instructions
- The device is not intended for use in potentially explosive areas.
- Only trained specialist personnel authorized by the facility owner/operator should perform installation, commissioning, operation, and maintenance.
- Unauthorized modifications are not permitted and can lead to unforeseeable dangers.
- Repairs should only be carried out by the manufacturer or authorized distributors using original spare parts.
- The device is designed with state-of-the-art technology and meets applicable standards and EU directives.
- Always wear required personal protective equipment as per national regulations.
Product Description
The Liquicap FTZ61 determines foam level by measuring changes in capacitance. The sensor uses a three-electrode arrangement (sensor, ground, and guard electrode) to measure capacitance between the sensor and ground electrodes, with the guard electrode mitigating external interferences.
Product Components
- Housing cover
- Pressure compensation filter
- Push-button for empty calibration
- M12 data cable connector
- Mounting bracket (M5 screw holes)
- Cable to sensor
Mounting Bracket
The provided mounting bracket attaches the device to a rail. Additional adapters can be used for attachment to metal frames. The bracket features M5 screw holes for adapter attachment and an M6 screw for securing the transmitter.
Incoming Acceptance
Scope of Delivery
- Liquicap FTZ61 transmitter (Order number: FTZ61-xxx)
- Self-adhesive sensor for FTZ61 (Order number: FZZ61-xxx) (Optional)
- Mounting bracket for FTZ61 (Order number: 71647578)
- Data cable 5 m (16 ft) for FTZ61 (Order number: 71647581)
Storage
- Store protected from impact.
- Permitted storage temperature: –20 to +85 °C (–4 to 185 °F).
- Maximum permitted storage air humidity: 80%.
Installation
Mounting
The transmitter can be mounted using the provided mounting bracket. The mounting point must be electrically grounded. The mounting adapter (customer-supplied) must be metal.
Installation Steps
- Install the device.
- Connect the device to the control unit or PLC using the supplied data cable.
- Ensure the device is powered upon connection.
- Attach the self-adhesive sensor to the plastic bag and connect it.
Dimensions
See the official PDF for exact dimensions of the transmitter, sensor, and sensor cover.
Electrical Connections
Power Supply
- Supply voltage: 11 to 35 VDC
- Power consumption: ≤ 700 mW
- Reverse polarity protection: Yes
- Separation voltage: 0.5 kV
- Overvoltage category: II
- Must be operated with a 50 mA fine-wire fuse or a maximum input current limited to 50 mA.
Data Cable
- Length: 5000 ± 60 mm (197 ± 2.36 in)
- Connector to controller (PLC): M12, 5 pins, A-coded
- Connector to device: M12, 4 pins, A-coded
Connector Pin Assignment (Device to PLC)
- Device Connector (4-pin M12, female):
- Pin 1: Signal (+)
- Pin 2: NC
- Pin 3: Signal (-)
- Pin 4: Shield of cable (ground, housing)
- PLC Connector (5-pin M12, male):
- Pin 1: Signal 4 to 20 mA (+)
- Pin 2: Signal (-)
- Pins 3-5: NC
Failure Information
- Underranging: Decrease from 4.0 mA to 3.8 mA
- Overranging: Increase from 20.0 mA to 20.5 mA
- Power or device failure: < 3.6 mA
Sensor Connection
- Bag wall thickness should not exceed 2 mm (0.8 in).
- Attach sensor horizontally above the liquid level, ensuring it is not covered by foam.
- If the sensor is pressed against a metal container, attach the sensor cover.
Commissioning
Empty Calibration
- Stores the capacitance value of the sensor when not covered by foam or liquid.
- Output current is 4 mA after empty calibration.
- Requires setting the function switch to position 2 and pressing the empty calibration push-button for at least 2 seconds.
Full Calibration
- Adapts measurement to process conditions with significant foam coverage.
- Output current is 20 mA after full calibration.
- Requires setting the function switch to position 3 and pressing the "+" key until the green LED flashes.
Change Calibration
Allows resetting or overwriting existing calibration points. The full calibration capacitive value must be higher than the empty calibration value.
Operation
Human Interface and Display Elements
- Function Switch (A): Selects operating mode (Diagnostic, Measuring, Calibration, Span, Damping).
- Push-button (B): Used for empty calibration.
- Key "+" (C): Used for full calibration and parameter adjustment.
- LEDs: Indicate status (ready, error, switching state).
Diagnostics and Troubleshooting
Fault Diagnostics
Faults are indicated by LEDs. Priority is given to more serious faults.
| LEDs (1, 2, 3, 4, 5, 6) | Cause | Priority | Remedy |
|---|---|---|---|
| On, On, Off, On, On, Off | Measure capacitance too large | 0 | Check sensor for short circuit |
| On, On, On, Off, Off, Off | Internal fault | 1 | Replace electronics |
| On, On, Off, On, Off, Off | Calibration point(s) outside measuring range | 2 | Recalibrate |
| On, Off, On, On, Off, Off | Calibration points are interchanged | 3 | Recalibrate |
| On, On, Off, Off, On, Off | Calibration point too close to measuring range limit | 4 | Reduce switch point or select new location |
| On, Off, Off, On, Off, Off | No calibration carried out | 5 | Carry out empty or full calibration |
| On, On, On, Off, Off, Off | Internal fault | 6 | Contact Endress+Hauser Service |
| On, On, Off, Off, Off, On | Capacitance change too small | 7 | Contact Endress+Hauser Service |
| On, On, On, Off, Off, Off | Sensor DAT (EEPROM) data invalid | 8 | Carry out download from electronic insert |
| On, Off, Off, Off, Off, Off | Internal fault | 9 | Contact Endress+Hauser Service |
| On, Off, Off, Off, Off, Off | Measured temperature outside range | 10 | Operate within specified temperature range |
Error Current / Warning
- All internal errors result in an output current < 3.6 mA.
- If capacitance > 500 pF, an error message is displayed (red LED flashes). Calibration is not possible.
- If an error current occurs after empty calibration, disconnect the sensor, recalibrate. If the output is still 4 mA, replace the sensor.
Maintenance and Servicing
No special maintenance is required. The housing cover should only be removed by qualified personnel. Avoid modifying internal electronics.
Cleaning
Use cleaning agents that do not corrode the housing surface or seals.
Disposal
Follow national regulations. Minimize disposal of WEEE as unsorted municipal waste by returning to the manufacturer. Ensure the device is free of hazardous residues before disposal.
Technical Data
Power Supply
- Supply voltage: 11 to 35 VDC
- Power consumption: 700 mW
- Reverse polarity protection: Yes
- Separation voltage: 0.5 kV
- Electrical connection: For PLC, AI modules 4 to 20 mA in accordance with EN 61131–2.
Data Cable
- Diameter: 3.8 mm (0.15 in)
- Length: 5000 ± 60 mm (197 ± 2.36 in)
- Jacket: Black, TPU
- Connectors: M12, 4-pin (device), M12, 5-pin (PLC), A-coded
Sensor Cable
- Diameter: 10.5 mm (0.41 in)
- Length: 2900 ± 90 mm (114 ± 3.54 in)
- Color: Gray (RAL7001)
- Material: Silicone
- Connector: M8, female, 3 pins, A-coded
Input
- Measurement frequency: 500 kHz
- Measurement span: 10 pF (default), selectable up to 200 pF. 5 pF is not recommended.
- Maximum measurable capacitance: 500 pF
Output
- Output signal: 4 to 20 mA, galvanically isolated
- Underranging: down to 3.8 mA
- Overranging: up to 20.5 mA
- Alarm output: < 3.6 mA
Performance Characteristics
- Reproducibility: 0.1 % of full-scale value (500 pF)
- Ambient temperature effect: < 0.06 % / 10 K of full-scale value (500 pF)
Operating Conditions: Environment
- Use: Indoor use only
- Degree of protection: IP65 (EN 60529), Type 4X (NEMA 250)
- Ambient temperature range: 0 to +40 °C (32 to 104 °F)
- Storage temperature: –20 to +85 °C (–4 to 185 °F)
- Humidity: < 80 %
- Operating altitude: ≤ 2000 m (6500 ft)
- Overvoltage category: Category II
- Electromagnetic compatibility:
- Interference emission: EN 55011:2011, Class B
- Interference immunity: EN 61326-1:2013, Appendix A, NAMUR NE 21:2017
Mechanical Construction
- Weight: Approx. 1.4 kg (3.09 lb)
- Materials: Stainless steel housing (316L/1.4404), nickel-plated brass cable gland, silicone seal, PBT-FR cover cap, TPE/PTFE pressure compensation plug, EPDM O-ring. Materials are not in contact with the measured medium.
Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.
Official datasheet (PDF)
Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.