USER’S GUIDE for the

TMP190 – Temperature Sensing and Encoder/Index Input Module





Approvals and Safety Considerations

The Elite Series is compliant with the following CE standards:

Safety: EN 61010-1:2010

EMC: IEC 61326-1:2013, IEC 61326-2-3:2013

To maintain compliance with these standards, the following operating conditions must be maintained:

  • All I/O connecting cables must be shielded and less than three meters in length
  • AC power cables must be rated at a minimum of 250 V and 5 A
  • AC power must be connected to a grounded mains outlet rated less than 20A
  • Use the included CE approved power supply with 1-, 2-, and 3- slot enclosures. If an alternative power supply is used, it must have equivalent CE certification and provide safety isolation from the mains according to IEC60950 or 61010.
  • Sensors must not be attached to parts operating at hazardous voltages in excess of 33VRMS or 70VDC

Use of the equipment in any other manner may impair its safety and EMI protections.


Probe Tip Contact Caution

The sensing tips of capacitive probes produce voltages as high as 70 Vrms. These are high frequency voltages with very low power so they pose no danger. Normally when the probe tip is touched, the probe stops functioning and voltage is reduced to near zero. But under certain circumstances, the voltage may cause a slight tingle or burning sensation, especially with the second generation probes used with the CPL490. For maximum performance probe tips should remain free of oils or other contaminants.

For these reasons, it is recommended the probe tips not be touched.

Helpful Technical Support Document Online

Lion Precision’s web site has a large selection of technical documents (TechNotes and Application Notes) in the Technical Library. These documents provide detailed descriptions of the operation and use of Lion Precision high-performance sensors.

The Technical Library can be accessed at:

Some of the titles include:


The TMP190 Module monitors up to seven channels of temperature data and provides signal conditioning and input connections for encoder and index inputs.


The TMP190 is used with the Lion Precision Spindle Error Analyzer (SEA) and requires the SEA software to access the temperature signals.

Operating – Temperature Sensing

Temperature Probes

Thermistor type temperature probes are used with the TMP 190 which supports up to seven channels of temperature sensing.

Temperature probes provided with the module use YSI thermistors: YSI 44036 Series Thermistor (10 kΩ @ 25° C).

Temperature Probe
Magnetic Surface Probe.
P016-4050 Temperature Probe


Making Temperature Measurements

Place temperature probes in positions to take desired measurements. When measuring surface temperatures, solid mechanical contact is important.

Use Spindle Error Analyzer (SEA) Software to extract temperature readings.

Block Diagram – Temperature

Block Diagram

Connections to Temperature Probes

The two wires of each temperature probe are connected according to the chart below. The probes are by nature unpolarized so there is no differentiation between the two conductors.

Pin Numbers Connection Pin Numbers Connection Pin Connector
1, 9 Probe 1 (T1) 5, 13 Probe 5 (T5)
2, 10 Probe 2 (T2) 6, 14 Probe 6 (T6)
3, 11 Probe 3 (T3) 7, 15 Probe 7 (T7)
4, 12 Probe 4 (T4) 8 No Connection


TMP190 Temperature Specifications1
Accuracy ±1.8 °F@40 °F – 180 °F ±1. 0°C@4°C – 8 2°C
Output Voltage ±10VDC
Measuring Range 40 °F – 180 °F 4 °C – 82 °C
Temperature Probe Interchangeability Error ±0.2 °F @ 68 °F ±0.1 °C @ 20 °C

1Shifts as high as 4 °C may occur in high EMI conditions (10 V/m).

Encoder/Index Pulse Input

The TMP190 also processes encoder and index pulse inputs for use by the Spindle Error Analyzer. The module performs basic signal processing on the incoming signal then passes the conditioned signal to the data acquisition hardware for analysis by the software.

By definition, index pulses occur once during each revolution of the spindle. Encoder pulses occur many times per revolution. Both are used to provide angular location information to software during a measurement of a rotating target.

Encoder and Index LEDs

To help verify encoder and index pulse operation, green LEDs indicate activity on the encoder and index inputs by flashing at half the frequency of the corresponding input signal.

Single-Ended or Differential Inputs

Encoder and index inputs can be configured as single-ended or differential.

In single-ended mode, the signal is measured between the + input and ground. In differential mode, the signal is measured between the + and – inputs.

Differential inputs are less susceptible to noise and interference. Noise and interference from the measurement environment is often injected equally into both wires from the encoder or index generator. When the signal is taken differentially, the noise and interference is canceled resulting in a cleaner signal.

The front panel switch selects the operating mode.

Connections – Encoder/Index

DC power is available on the connector to power encoders or proximity switches.

Pin Number Signal Pin Connector
1 Ground
2 Ground
3 +5 VDC, 200 mA max. with self-resetting fuse
4 Ground
5 +15 VDC, 10 0mA max. with self-resetting fuse
6 – Index input, ±12 V Max.
7 + Index input, ±12 V Max.
8 – Encoder input, ±12 V Max.
9 + Encoder input, ±12 V Max.


Block Diagram – Encoder/Index

Differential Input Configuration

Elite Series Enclosures

Elite Series Enclosures

Elite Series enclosures provide housing and critical signals to Elite Series modules. Sensor output signals are available via a rear-panel high-density connector which is configured for direct connection to National Instruments™ data acquisition hardware.

The specific Elite Series enclosure model number indicates the maximum number of slots available for plug-in modules as well as other features:

Model Number of Module Slots Input Power Tin-up Handle Mounting Flanges


1 ±15 VDC No Yes
EN192 2 ±15 VDC No Yes
EN193 3 ±15 VDC No Yes
EN196 6

100-250 VAC

50/60 Hz

Yes No
EN198 8

100-250 VAC

50/60 Hz

Yes No


Power Specifications

Model Power Input Note
EN191, EN192, EN193

±15 VDC ±5%, 400mA

Maximum (A power supply is included with orders)

To maintain maximum resolution use a linear power supply or a power supply with switching frequency greater than 100 kHz such as Lion Precision Power Supply P014-5040.

To maintain CE compliance, use the included power supply or equivalent CE compliant model.

EN196, EN198

100-250 VAC, 50/60 Hz,

250 VA Maximum


EN191, EN192, EN193 Power Connector
Pin Connection
1 Ground
3 -15 VDC
4 +15 VDC


4 Pin Connector






External Power Supply

EN191, EN192, and EN193 systems include an external power supply. The supply has a connector which allows direct connection to the enclosure.

This supply features a high-frequency (100kHz) switching supply. The high switching frequency allows the sensing modules to operate at maximum resolution.

DC Output Voltage

+15 VDC ; 2.0 A

-15 VDC ; 1.0 A

AC Input Voltage

100-240 VAC, 50/60 Hz,

1.35 A max

Power Brick Dimensions

DAQ Connector Pinout

All unlisted pins are reserved for proprietary use by Lion Precision and should not be connected to external contacts.DAQ Connector

Pin Output Signals
11 Encoder
12, 12, 15, 18, 53 Digital Ground
29, 32, 64, 67 Analog Ground
23 – Analog Out; Channel 8
25 + Analog Out; Channel 7
26 – Analog Out; Channel 6
28 + Analog Out; Channel 5
30 + Analog Out; Channel 4
31 – Analog Out; Channel 3
33 + Analog Out; Channel 2
34 – Analog Out; Channel 1
57 + Analog Out; Channel 8
58 – Analog Out; Channel 7
60 + Analog Out; Channel 6
61 – Analog Out; Channel 5
63 – Analog Out; Channel 4
65 + Analog Out; Channel 3
66 – Analog Out; Channel 2
68 + Analog Out; Channel 1


Mechanical Specifications: EN191, EN192, EN193
Model A B C


84.6 mm


66.2 mm


96.7 mm



120.1 mm


101.8 mm


132.2 mm



155.7 mm


137.3 mm


167.8 mm


Mechanical Specifications

Mechanical Specifications: EN196, EN198
Model A


257 mm



364 mm


Mechanical Specifications

ACCESSORIES: Air-Bearing C-LVDT: Capacitive LVDT-Type Contact Sensor

The Air-Bearing C-LVDT converts a capacitive sensor using a standard capacitive probe into a high-precision contact displacement sensor similar to an LVDT. The capacitive probe is installed in the top of the C-LVDT body where it measures the location of a target connected on the inside end of the stylus. The C-LVDT uses a linear air-bearing for nearly frictionfree movement of the stylus, and the porous carbon air bearing is square to prevent stylus rotation. Adjustable air pressure for extending the stylus provides for contact forces less than one gram, and the C-LVDT features a retraction port through which application of air pressure will retract the stylus.

The C-LVDT uses an interchangeable diamond tip. Diamond has been selected over ruby for the following reasons:

  • Low Friction – Side forces cause less lateral deflection from moving targets and less hysteresis on direction reversal.
  • Highly Polished Surface – Diamond accepts and holds a high polish, minimizing the possibility of scratching the measured surface.
  • Minimal Wear – Increased accuracy and longer life.

Contact Force Adjustment
There is a contact force adjustment screw located on the end of the probe body near the cable exit. Use a 1/16″ hex key to turn the adjustment clockwise to increase the contact force or counter clockwise to decrease it. Contact force is also a function of the air pressure applied to the C-LVDT. To maintain constant contact force, supplied air pressure must be held constant.

Air Exhaust

The 0.1″ slot around the body near the top of the C-LVDT is where air is exhausted. Do not clamp the C-LVDT over this ring. The ring must remain at least partially clear at all times for proper operation of the C-LVDT.


Measurement Range 0.5 mm, 0.020 inch
Contact Force 0.2 g to 100 g
Radial Stiffness < 0.25 μm/g
Bearing Linear, porous air bearing
Diamond Tip

Radius: 3.175 mm, 0.125 inch

Mount: 4-48AGD Thread

Weight of Moving Mass 4.2 g
Air Connection 1/16 inch ID flexible tubing
Air Consumption 3-7 lpm, 0.10-0.25 cfm
Operating Air Pressure 420-480 kPa, 60-70 psi
Air Requirement Dry, filtered to less than 5 μm particle size


Mechanical Detail

Mechanical Detail Diagram CLVDT